diff --git a/pom.xml b/pom.xml
index a5d31ae8..4bcacc63 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
         <version>7</version>
     </parent>
     <groupId>us.codecraft</groupId>
-    <version>0.2.1-SNAPSHOT</version>
+    <version>0.2.1</version>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
     <artifactId>webmagic-parent</artifactId>
@@ -32,7 +32,7 @@
         <connection>scm:git:git@github.com:code4craft/webmagic.git</connection>
         <developerConnection>scm:git:git@github.com:code4craft/webmagic.git</developerConnection>
         <url>git@github.com:code4craft/webmagic.git</url>
-      <tag>HEAD</tag>
+      <tag>webmagic-parent-0.2.1</tag>
   </scm>
     <licenses>
         <license>
diff --git a/webmagic-core/pom.xml b/webmagic-core/pom.xml
index 4833192a..06791067 100644
--- a/webmagic-core/pom.xml
+++ b/webmagic-core/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic-parent</artifactId>
-        <version>0.2.1-SNAPSHOT</version>
+        <version>0.2.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-extension/pom.xml b/webmagic-extension/pom.xml
index 4d856fa1..29ad49d7 100644
--- a/webmagic-extension/pom.xml
+++ b/webmagic-extension/pom.xml
@@ -3,7 +3,7 @@
     <parent>
         <groupId>us.codecraft</groupId>
         <artifactId>webmagic-parent</artifactId>
-        <version>0.2.1-SNAPSHOT</version>
+        <version>0.2.1</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>