[maven-release-plugin] prepare for next development iteration
diff --git a/broker/pom.xml b/broker/pom.xml
index d655959..2afb80c 100644
--- a/broker/pom.xml
+++ b/broker/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/client/pom.xml b/client/pom.xml
index a8034c2..d2ffb78 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/common/pom.xml b/common/pom.xml
index 05c2e22..4065700 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/distribution/pom.xml b/distribution/pom.xml
index fccb91e..1dbb73b 100644
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
     <artifactId>rocketmq-distribution</artifactId>
     <name>rocketmq-distribution ${project.version}</name>
diff --git a/example/pom.xml b/example/pom.xml
index d246de4..3c4c7d5 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
@@ -51,7 +51,7 @@
         <dependency>
             <groupId>org.apache.rocketmq</groupId>
             <artifactId>rocketmq-openmessaging</artifactId>
-            <version>4.2.0</version>
+            <version>4.2.1-SNAPSHOT</version>
         </dependency>
     </dependencies>
 </project>
diff --git a/filter/pom.xml b/filter/pom.xml
index c024eff..6d59283 100644
--- a/filter/pom.xml
+++ b/filter/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>rocketmq-all</artifactId>
         <groupId>org.apache.rocketmq</groupId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/filtersrv/pom.xml b/filtersrv/pom.xml
index 96ce62a..b7ece1f 100644
--- a/filtersrv/pom.xml
+++ b/filtersrv/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/logappender/pom.xml b/logappender/pom.xml
index 0e0ac44..857f9d5 100644
--- a/logappender/pom.xml
+++ b/logappender/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
     <artifactId>rocketmq-logappender</artifactId>
diff --git a/namesrv/pom.xml b/namesrv/pom.xml
index c2134c1..74cef87 100644
--- a/namesrv/pom.xml
+++ b/namesrv/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/openmessaging/pom.xml b/openmessaging/pom.xml
index 56246f8..e1a8337 100644
--- a/openmessaging/pom.xml
+++ b/openmessaging/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>rocketmq-all</artifactId>
         <groupId>org.apache.rocketmq</groupId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/pom.xml b/pom.xml
index 80db29f..02e173b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
     <inceptionYear>2012</inceptionYear>
     <groupId>org.apache.rocketmq</groupId>
     <artifactId>rocketmq-all</artifactId>
-    <version>4.2.0</version>
+    <version>4.2.1-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>Apache RocketMQ ${project.version}</name>
     <url>http://rocketmq.apache.org/</url>
@@ -42,7 +42,7 @@
         <url>git@github.com:apache/rocketmq.git</url>
         <connection>scm:git:git@github.com:apache/rocketmq.git</connection>
         <developerConnection>scm:git:git@github.com:apache/rocketmq.git</developerConnection>
-        <tag>rocketmq-all-4.2.0</tag>
+        <tag>HEAD</tag>
     </scm>
 
     <mailingLists>
diff --git a/remoting/pom.xml b/remoting/pom.xml
index 4dc0e73..9ede84c 100644
--- a/remoting/pom.xml
+++ b/remoting/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/srvutil/pom.xml b/srvutil/pom.xml
index 7965966..6e2a60e 100644
--- a/srvutil/pom.xml
+++ b/srvutil/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/store/pom.xml b/store/pom.xml
index ca2eb1a..342617d 100644
--- a/store/pom.xml
+++ b/store/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/test/pom.xml b/test/pom.xml
index b7713ae..b6e8730 100644
--- a/test/pom.xml
+++ b/test/pom.xml
@@ -20,7 +20,7 @@
     <parent>
         <artifactId>rocketmq-all</artifactId>
         <groupId>org.apache.rocketmq</groupId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>
diff --git a/tools/pom.xml b/tools/pom.xml
index 2185293..1cac472 100644
--- a/tools/pom.xml
+++ b/tools/pom.xml
@@ -19,7 +19,7 @@
     <parent>
         <groupId>org.apache.rocketmq</groupId>
         <artifactId>rocketmq-all</artifactId>
-        <version>4.2.0</version>
+        <version>4.2.1-SNAPSHOT</version>
     </parent>
 
     <modelVersion>4.0.0</modelVersion>