diff --git a/pom.xml b/pom.xml
index 19eb36d7..8b3c9877 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
         <version>7</version>
     </parent>
     <groupId>us.codecraft</groupId>
-    <version>0.3.0</version>
+    <version>0.3.1-SNAPSHOT</version>
     <modelVersion>4.0.0</modelVersion>
     <packaging>pom</packaging>
     <properties>
@@ -36,7 +36,7 @@
         <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>webmagic-0.3.0</tag>
+      <tag>HEAD</tag>
   </scm>
     <licenses>
         <license>
diff --git a/webmagic-core/pom.xml b/webmagic-core/pom.xml
index 76526a88..eb4a7514 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>0.3.0</version>
+        <version>0.3.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-extension/pom.xml b/webmagic-extension/pom.xml
index e58fa020..4cdf0010 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>0.3.0</version>
+        <version>0.3.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>