[maven-release-plugin] prepare release maven-checkstyle-plugin-3.1.0
diff --git a/pom.xml b/pom.xml
index 4c6b46c..2f52af3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
   </parent>
 
   <artifactId>maven-checkstyle-plugin</artifactId>
-  <version>3.1.0-SNAPSHOT</version>
+  <version>3.1.0</version>
   <packaging>maven-plugin</packaging>
 
   <name>Apache Maven Checkstyle Plugin</name>
@@ -45,7 +45,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-checkstyle-plugin.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-checkstyle-plugin.git</developerConnection>
     <url>https://github.com/apache/maven-checkstyle-plugin/tree/${project.scm.tag}</url>
-    <tag>HEAD</tag>
+    <tag>maven-checkstyle-plugin-3.1.0</tag>
   </scm>
   <issueManagement>
     <system>JIRA</system>