diff --git a/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml b/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml
index b70c1f3..c13c074 100644
--- a/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-log4j-1.x/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml b/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml
index e7ab921..973b8dc 100644
--- a/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-log4j-2.x/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml b/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml
index de28e2b..229a232 100644
--- a/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-logback-1.x/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-opentracing/pom.xml b/apm-application-toolkit/apm-toolkit-opentracing/pom.xml
index e9143dd..8b936ef 100644
--- a/apm-application-toolkit/apm-toolkit-opentracing/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-opentracing/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/apm-toolkit-trace/pom.xml b/apm-application-toolkit/apm-toolkit-trace/pom.xml
index 390fa63..987a4c6 100644
--- a/apm-application-toolkit/apm-toolkit-trace/pom.xml
+++ b/apm-application-toolkit/apm-toolkit-trace/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-application-toolkit</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-application-toolkit/pom.xml b/apm-application-toolkit/pom.xml
index c3ce08a..23d69aa 100644
--- a/apm-application-toolkit/pom.xml
+++ b/apm-application-toolkit/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>apm-application-toolkit</artifactId>
diff --git a/apm-checkstyle/pom.xml b/apm-checkstyle/pom.xml
index 948907d..2481213 100644
--- a/apm-checkstyle/pom.xml
+++ b/apm-checkstyle/pom.xml
@@ -27,7 +27,7 @@
 
     <groupId>org.apache.skywalking</groupId>
     <artifactId>apm-checkstyle</artifactId>
-    <version>6.0.0-alpha-SNAPSHOT</version>
+    <version>6.0.0-alpha</version>
     <description>Module to hold Checkstyle for SkyWalking.</description>
 
     <properties>
@@ -64,4 +64,8 @@
             </plugin>
         </plugins>
     </build>
+
+  <scm>
+    <tag>v6.0.0-alpha</tag>
+  </scm>
 </project>
diff --git a/apm-commons/apm-datacarrier/pom.xml b/apm-commons/apm-datacarrier/pom.xml
index 93ad890..40190e3 100644
--- a/apm-commons/apm-datacarrier/pom.xml
+++ b/apm-commons/apm-datacarrier/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-commons</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-commons/apm-util/pom.xml b/apm-commons/apm-util/pom.xml
index 2603f92..3c74289 100644
--- a/apm-commons/apm-util/pom.xml
+++ b/apm-commons/apm-util/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-commons</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-commons/pom.xml b/apm-commons/pom.xml
index edf1c3b..6b46de8 100644
--- a/apm-commons/pom.xml
+++ b/apm-commons/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-dist/pom.xml b/apm-dist/pom.xml
index bbbfb80..3143e87 100644
--- a/apm-dist/pom.xml
+++ b/apm-dist/pom.xml
@@ -17,12 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
@@ -82,12 +81,8 @@
                         </goals>
                         <configuration>
                             <tasks>
-                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.tar.gz"
-                                      tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.tar.gz"
-                                      overwrite="true"/>
-                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.zip"
-                                      tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.zip"
-                                      overwrite="true"/>
+                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.tar.gz" tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.tar.gz" overwrite="true" />
+                                <copy file="${project.build.directory}/apache-skywalking-apm-incubating.zip" tofile="${project.basedir}/../dist/apache-skywalking-apm-incubating.zip" overwrite="true" />
                             </tasks>
                         </configuration>
                     </execution>
diff --git a/apm-protocol/apm-network/pom.xml b/apm-protocol/apm-network/pom.xml
index 935d638..0a858e8 100644
--- a/apm-protocol/apm-network/pom.xml
+++ b/apm-protocol/apm-network/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-protocol</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-protocol/pom.xml b/apm-protocol/pom.xml
index 0b59e5d..a676aea 100644
--- a/apm-protocol/pom.xml
+++ b/apm-protocol/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-agent-core/pom.xml b/apm-sniffer/apm-agent-core/pom.xml
index cc95d79..58952fd 100644
--- a/apm-sniffer/apm-agent-core/pom.xml
+++ b/apm-sniffer/apm-agent-core/pom.xml
@@ -16,14 +16,13 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-agent-core</artifactId>
@@ -214,8 +213,7 @@
                                 </filter>
                             </filters>
                             <transformers>
-                                <transformer
-                                    implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
+                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer" />
                             </transformers>
                         </configuration>
                     </execution>
@@ -231,7 +229,7 @@
                         </goals>
                         <configuration>
                             <tasks>
-                                <delete dir="${project.basedir}/../../packages"/>
+                                <delete dir="${project.basedir}/../../packages" />
                             </tasks>
                         </configuration>
                     </execution>
@@ -240,22 +238,14 @@
                         <phase>package</phase>
                         <configuration>
                             <target>
-                                <echo message="unjar"/>
-                                <unzip src="${project.build.directory}/${artifactId}-${version}.jar"
-                                       dest="${project.build.directory}/unpacked/"/>
-                                <echo message="rename service providers in META-INF/services"/>
-                                <move
-                                    file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_osx_x86_64.jnilib"
-                                    tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_osx_x86_64.jnilib"/>
-                                <move
-                                    file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_linux_x86_64.so"
-                                    tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_linux_x86_64.so"/>
-                                <move
-                                    file="${project.build.directory}/unpacked/META-INF/native/netty_tcnative_windows_x86_64.dll"
-                                    tofile="${project.build.directory}/unpacked/META-INF/native/org_apache_skywalking_apm_dependencies_netty_tcnative_windows_x86_64.dll"/>
-                                <echo message="jar back"/>
-                                <jar destfile="${project.build.directory}/${artifactId}-${version}.jar"
-                                     basedir="${project.build.directory}/unpacked"/>
+                                <echo message="unjar" />
+                                <unzip src="${project.build.directory}/${artifactId}-${version}.jar" dest="${project.build.directory}/unpacked/" />
+                                <echo message="rename service providers in META-INF/services" />
+                                <move file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_osx_x86_64.jnilib" tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_osx_x86_64.jnilib" />
+                                <move file="${project.build.directory}/unpacked/META-INF/native/libnetty_tcnative_linux_x86_64.so" tofile="${project.build.directory}/unpacked/META-INF/native/liborg_apache_skywalking_apm_dependencies_netty_tcnative_linux_x86_64.so" />
+                                <move file="${project.build.directory}/unpacked/META-INF/native/netty_tcnative_windows_x86_64.dll" tofile="${project.build.directory}/unpacked/META-INF/native/org_apache_skywalking_apm_dependencies_netty_tcnative_windows_x86_64.dll" />
+                                <echo message="jar back" />
+                                <jar destfile="${project.build.directory}/${artifactId}-${version}.jar" basedir="${project.build.directory}/unpacked" />
                             </target>
                         </configuration>
                         <goals>
diff --git a/apm-sniffer/apm-agent/pom.xml b/apm-sniffer/apm-agent/pom.xml
index dd63db8..f2859e6 100644
--- a/apm-sniffer/apm-agent/pom.xml
+++ b/apm-sniffer/apm-agent/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-agent</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml
index 52706f5..169c93d 100644
--- a/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/activemq-5.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml
index c3aa8fc..cf209e1 100644
--- a/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/dubbo-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml
index 7a2f96e..6cf94fb 100644
--- a/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/elastic-job-2.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml
index 95cedd0..f130594 100644
--- a/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/elasticsearch-5.x-plugin/pom.xml
@@ -16,13 +16,11 @@
   ~ limitations under the License.
   ~
   -->
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml
index b7f401d..56a185d 100644
--- a/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/feign-default-http-9.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml
index 6efc106..273df49 100644
--- a/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/grpc-1.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-grpc-1.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml
index 9aa4dfa..1369d92 100755
--- a/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/h2-1.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml
index 4657f8d..6524af4 100644
--- a/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/httpClient-4.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-httpClient-4.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml
index 6e006cd..fcab9ac 100644
--- a/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/httpasyncclient-4.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-httpasyncclient-4.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml
index d4967d7..1d1b7c2 100644
--- a/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/hystrix-1.x-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml b/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml
index 67266d6..1e9c715 100755
--- a/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jdbc-commons/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml
index d2c6e80..69e64f7 100644
--- a/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jedis-2.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-jedis-2.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml
index 71c0a02..2802c10 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.0-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>jetty-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml
index 36870b4..0eda337 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-client-9.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>jetty-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml
index 5a1d011..5601d92 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/jetty-server-9.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>jetty-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml
index cbdf659..78b313e 100644
--- a/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/jetty-plugin/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>jetty-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml
index bcb80c7..15bc114 100644
--- a/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/kafka-v1-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml
index bf508fd..aa8fd00 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-2.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml
index 8c48f74..a5757eb 100644
--- a/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/mongodb-3.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-mongodb-3.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml
index c4c2e7d..6bd1eda 100644
--- a/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/motan-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml
index 309afd9..abba685 100755
--- a/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/mysql-5.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml
index 1c2d5d5..c12f444 100644
--- a/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/nutz-plugins/http-1.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>nutz-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml
index 2cd2e1c..be62e27 100644
--- a/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/nutz-plugins/mvc-annotation-1.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>nutz-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml
index 04c39f7..8fd56df 100644
--- a/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/nutz-plugins/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>nutz-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml
index f426bce..4996b59 100644
--- a/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/okhttp-3.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/pom.xml
index 2cd9013..9a92760 100644
--- a/apm-sniffer/apm-sdk-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-sdk-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml
index 1b8dff6..a143fd7 100755
--- a/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/postgresql-8.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml
index e5492dd..e051976 100644
--- a/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/rocketMQ-3.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml
index 8d82324..135e90e 100644
--- a/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/rocketMQ-4.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml
index 93e2a29..e17e86a 100644
--- a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml
index d35f251..2be5de4 100644
--- a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-0.x-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>servicecomb-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml
index 7c4322a..736753e 100644
--- a/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/servicecomb-plugin/servicecomb-java-chassis-1.x-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>servicecomb-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml
index f41ccda..b877708 100644
--- a/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/sharding-jdbc-1.5.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml
index 2222975..1664b16 100644
--- a/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/sofarpc-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml
index 2d836b3..cccd885 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/concurrent-util-4.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml
index 7947bd6..f527d08 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/core-patch/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml
index 766ef03..5cd48c0 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-3.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml
index ba7ac33..b91165c 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-4.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml
index 143b425..8f332ef 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml
index c114fce..dda99e6 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>spring-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml
index 8c3218a..88bdbb4 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/resttemplate-4.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml
index 912f3e1..a03c6b8 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>spring-cloud</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>netflix-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml
index 71e6532..5d752e5 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/netflix-plugins/spring-cloud-feign-1.x-plugin/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>netflix-plugins</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-spring-cloud-feign-1.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml
index 78ddb96..dce5b03 100644
--- a/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spring-plugins/spring-cloud/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>spring-plugins</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>spring-cloud</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml
index 1275fe7..9e51a80 100644
--- a/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/spymemcached-2.x-plugin/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-spymemcached-2.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml
index 448cb90..c7b3ea1 100644
--- a/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/struts2-2.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml
index 1f696db..a92436b 100644
--- a/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/tomcat-7.x-8.x-plugin/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>apm-sdk-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml b/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml
index 85b33a7..0f77472 100644
--- a/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/undertow-plugins/pom.xml
@@ -17,15 +17,13 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>undertow-plugins</artifactId>
diff --git a/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml
index 2370a4d..10860ae 100644
--- a/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/undertow-plugins/undertow-2.x-plugin/pom.xml
@@ -16,13 +16,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>undertow-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml b/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml
index 791d7ec..a908a96 100644
--- a/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml
+++ b/apm-sniffer/apm-sdk-plugin/xmemcached-2.x-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sdk-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-xmemcached-2.x-plugin</artifactId>
diff --git a/apm-sniffer/apm-test-tools/pom.xml b/apm-sniffer/apm-test-tools/pom.xml
index bf4eaf6..ae4cc2c 100644
--- a/apm-sniffer/apm-test-tools/pom.xml
+++ b/apm-sniffer/apm-test-tools/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>apm-sniffer</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
 
     <artifactId>apm-test-tools</artifactId>
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml
index e1dfc47..941f8c8 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-1.x-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml
index 701ebd7..aef3821 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-log4j-2.x-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml
index 30f0475..b00c27d 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-logback-1.x-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml
index c3fac6c..5970aae 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-opentracing-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml
index 368664c..53d4d54 100644
--- a/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/apm-toolkit-trace-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-toolkit-activation</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/apm-toolkit-activation/pom.xml b/apm-sniffer/apm-toolkit-activation/pom.xml
index dbde36f..c73bd94 100644
--- a/apm-sniffer/apm-toolkit-activation/pom.xml
+++ b/apm-sniffer/apm-toolkit-activation/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sniffer</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml b/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml
index 8640d28..ea172fb 100644
--- a/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml
+++ b/apm-sniffer/optional-plugins/optional-spring-plugins/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>optional-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
diff --git a/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml b/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml
index 79a4622..4efe3e8 100644
--- a/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml
+++ b/apm-sniffer/optional-plugins/optional-spring-plugins/spring-annotation-plugin/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>optional-spring-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <packaging>jar</packaging>
diff --git a/apm-sniffer/optional-plugins/pom.xml b/apm-sniffer/optional-plugins/pom.xml
index 023545f..3d71e14 100644
--- a/apm-sniffer/optional-plugins/pom.xml
+++ b/apm-sniffer/optional-plugins/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm-sniffer</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml b/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml
index ac0fee7..31c5262 100644
--- a/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml
+++ b/apm-sniffer/optional-plugins/trace-ignore-plugin/pom.xml
@@ -16,12 +16,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>optional-plugins</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-sniffer/pom.xml b/apm-sniffer/pom.xml
index ceca9d6..ec98748 100644
--- a/apm-sniffer/pom.xml
+++ b/apm-sniffer/pom.xml
@@ -21,7 +21,7 @@
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/apm-webapp/pom.xml b/apm-webapp/pom.xml
index da9c651..835e24f 100644
--- a/apm-webapp/pom.xml
+++ b/apm-webapp/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/pom.xml b/oap-server/pom.xml
index a722022..e051e4e 100644
--- a/oap-server/pom.xml
+++ b/oap-server/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>apm</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-alarm-plugin/pom.xml b/oap-server/server-alarm-plugin/pom.xml
index 14fea19..61b1ce4 100644
--- a/oap-server/server-alarm-plugin/pom.xml
+++ b/oap-server/server-alarm-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml b/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml
index 49fb18b..3d3cb50 100644
--- a/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/cluster-kubernetes-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-cluster-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml b/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml
index c1269ae..67163d7 100644
--- a/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/cluster-standalone-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-cluster-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml b/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml
index 0ba6843..9b1c7fd 100644
--- a/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/cluster-zookeeper-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>org.apache.skywalking</groupId>
         <artifactId>server-cluster-plugin</artifactId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-cluster-plugin/pom.xml b/oap-server/server-cluster-plugin/pom.xml
index 2e65980..df9b796 100644
--- a/oap-server/server-cluster-plugin/pom.xml
+++ b/oap-server/server-cluster-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-core/pom.xml b/oap-server/server-core/pom.xml
index b9b9154..3899942 100644
--- a/oap-server/server-core/pom.xml
+++ b/oap-server/server-core/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-buffer/pom.xml b/oap-server/server-library/library-buffer/pom.xml
index 852e316..1070ad7 100644
--- a/oap-server/server-library/library-buffer/pom.xml
+++ b/oap-server/server-library/library-buffer/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-client/pom.xml b/oap-server/server-library/library-client/pom.xml
index 26cc854..70f8f96 100644
--- a/oap-server/server-library/library-client/pom.xml
+++ b/oap-server/server-library/library-client/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-module/pom.xml b/oap-server/server-library/library-module/pom.xml
index 6df06f1..859c794 100644
--- a/oap-server/server-library/library-module/pom.xml
+++ b/oap-server/server-library/library-module/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-server/pom.xml b/oap-server/server-library/library-server/pom.xml
index da3e9d5..037e59e 100644
--- a/oap-server/server-library/library-server/pom.xml
+++ b/oap-server/server-library/library-server/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/library-util/pom.xml b/oap-server/server-library/library-util/pom.xml
index 23e8045..6e9112b 100644
--- a/oap-server/server-library/library-util/pom.xml
+++ b/oap-server/server-library/library-util/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-library</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-library/pom.xml b/oap-server/server-library/pom.xml
index ac79fb6..725e806 100644
--- a/oap-server/server-library/pom.xml
+++ b/oap-server/server-library/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-query-plugin/pom.xml b/oap-server/server-query-plugin/pom.xml
index 2d388c4..954f9fb 100644
--- a/oap-server/server-query-plugin/pom.xml
+++ b/oap-server/server-query-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-query-plugin/query-graphql-plugin/pom.xml b/oap-server/server-query-plugin/query-graphql-plugin/pom.xml
index e550381..940bac1 100644
--- a/oap-server/server-query-plugin/query-graphql-plugin/pom.xml
+++ b/oap-server/server-query-plugin/query-graphql-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-query-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/pom.xml
index 0ad99c3..af684df 100644
--- a/oap-server/server-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml
index 786b6d6..1d07631 100644
--- a/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-istio-telemetry-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml
index 0538152..89a94f1 100644
--- a/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-jvm-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml
index 43a8351..f9ae640 100644
--- a/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-mesh-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml
index 3277ed5..c86418c 100644
--- a/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-register-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml
index c32295a..81a1bb7 100644
--- a/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/skywalking-trace-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml b/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml
index 8dcf89a..1eed0f4 100644
--- a/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml
+++ b/oap-server/server-receiver-plugin/zipkin-receiver-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-receiver-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-starter/pom.xml b/oap-server/server-starter/pom.xml
index 91bf853..a91a6b3 100644
--- a/oap-server/server-starter/pom.xml
+++ b/oap-server/server-starter/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-storage-plugin/pom.xml b/oap-server/server-storage-plugin/pom.xml
index 48d5ac9..6f03747 100644
--- a/oap-server/server-storage-plugin/pom.xml
+++ b/oap-server/server-storage-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>oap-server</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml
index 737e4ff..b64ba66 100644
--- a/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml
+++ b/oap-server/server-storage-plugin/storage-elasticsearch-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-storage-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml b/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml
index 523467e..31a2ca6 100644
--- a/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml
+++ b/oap-server/server-storage-plugin/storage-jdbc-hikaricp-plugin/pom.xml
@@ -17,13 +17,11 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <artifactId>server-storage-plugin</artifactId>
         <groupId>org.apache.skywalking</groupId>
-        <version>6.0.0-alpha-SNAPSHOT</version>
+        <version>6.0.0-alpha</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 8490ad6..136e484 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,13 +17,12 @@
   ~
   -->
 
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>org.apache.skywalking</groupId>
     <artifactId>apm</artifactId>
-    <version>6.0.0-alpha-SNAPSHOT</version>
+    <version>6.0.0-alpha</version>
 
     <parent>
         <groupId>org.apache</groupId>
@@ -77,7 +76,7 @@
         <url>https://github.com/apache/incubator-skywalking</url>
         <connection>scm:git:https://github.com/apache/incubator-skywalking.git</connection>
         <developerConnection>scm:git:https://github.com/apache/incubator-skywalking.git</developerConnection>
-        <tag>HEAD</tag>
+        <tag>v6.0.0-alpha</tag>
     </scm>
 
     <issueManagement>