diff --git a/core/pom.xml b/core/pom.xml
index c79124a..d2a76b4 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -16,14 +16,13 @@
   specific language governing permissions and 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">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
 		<groupId>org.apache.hivemall</groupId>
 		<artifactId>hivemall</artifactId>
-		<version>0.5.0-incubating-SNAPSHOT</version>
+		<version>0.5.0-incubating-rc1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
@@ -230,8 +229,7 @@
 								</includes>
 							</artifactSet>
 							<transformers>
-								<transformer
-									implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+								<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
 									<manifestEntries>
 										<Implementation-Title>${project.name}</Implementation-Title>
 										<Implementation-Version>${project.version}</Implementation-Version>
diff --git a/mixserv/pom.xml b/mixserv/pom.xml
index 0a1b387..3ab2cda 100644
--- a/mixserv/pom.xml
+++ b/mixserv/pom.xml
@@ -16,14 +16,13 @@
   specific language governing permissions and 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">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
 		<groupId>org.apache.hivemall</groupId>
 		<artifactId>hivemall</artifactId>
-		<version>0.5.0-incubating-SNAPSHOT</version>
+		<version>0.5.0-incubating-rc1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
@@ -198,8 +197,7 @@
 								</filter>
 							</filters>
 							<transformers>
-								<transformer
-									implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+								<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
 									<manifestEntries>
 										<Main-Class>hivemall.mix.server.MixServer</Main-Class>
 										<Implementation-Title>${project.name}</Implementation-Title>
diff --git a/nlp/pom.xml b/nlp/pom.xml
index dc77c06..30d9ff0 100644
--- a/nlp/pom.xml
+++ b/nlp/pom.xml
@@ -16,14 +16,13 @@
   specific language governing permissions and 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">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
 		<groupId>org.apache.hivemall</groupId>
 		<artifactId>hivemall</artifactId>
-		<version>0.5.0-incubating-SNAPSHOT</version>
+		<version>0.5.0-incubating-rc1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>
 
@@ -215,8 +214,7 @@
 								</filter>
 							</filters>
 							<transformers>
-								<transformer
-									implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
+								<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
 									<manifestEntries>
 										<Implementation-Title>${project.name}</Implementation-Title>
 										<Implementation-Version>${project.version}</Implementation-Version>
diff --git a/pom.xml b/pom.xml
index 63ce606..f83828e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -16,13 +16,12 @@
   specific language governing permissions and 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">
 	<modelVersion>4.0.0</modelVersion>
 
 	<groupId>org.apache.hivemall</groupId>
 	<artifactId>hivemall</artifactId>
-	<version>0.5.0-incubating-SNAPSHOT</version>
+	<version>0.5.0-incubating-rc1</version>
 
 	<parent>
 	  <groupId>org.apache</groupId>
@@ -51,7 +50,8 @@
 		<url>https://git-wip-us.apache.org/repos/asf/incubator-hivemall.git</url>
 		<connection>scm:git:https://git-wip-us.apache.org/repos/asf/incubator-hivemall.git</connection>
 		<developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/incubator-hivemall.git</developerConnection>
-	</scm>
+	  <tag>v0.5.0-rc1</tag>
+  </scm>
 
 	<mailingLists>
 		<mailingList>
diff --git a/xgboost/pom.xml b/xgboost/pom.xml
index b9f11b8..22da0fb 100644
--- a/xgboost/pom.xml
+++ b/xgboost/pom.xml
@@ -16,14 +16,13 @@
   specific language governing permissions and 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">
 	<modelVersion>4.0.0</modelVersion>
 
 	<parent>
 		<groupId>org.apache.hivemall</groupId>
 		<artifactId>hivemall</artifactId>
-		<version>0.5.0-incubating-SNAPSHOT</version>
+		<version>0.5.0-incubating-rc1</version>
 		<relativePath>../pom.xml</relativePath>
 	</parent>