diff --git a/webmagic-core/pom.xml b/webmagic-core/pom.xml
index 90e36bb..c8d1e73 100644
--- a/webmagic-core/pom.xml
+++ b/webmagic-core/pom.xml
@@ -4,7 +4,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>us.codecraft</groupId>
-        <artifactId>webmagic</artifactId>
+        <artifactId>webmagic-parent</artifactId>
         <version>0.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/webmagic-extension/pom.xml b/webmagic-extension/pom.xml
index ae9bc5d..8a5059d 100644
--- a/webmagic-extension/pom.xml
+++ b/webmagic-extension/pom.xml
@@ -4,7 +4,7 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <parent>
         <groupId>us.codecraft</groupId>
-        <artifactId>webmagic</artifactId>
+        <artifactId>webmagic-parent</artifactId>
         <version>0.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
diff --git a/webmagic-lucene/pom.xml b/webmagic-lucene/pom.xml
index d7b4665..d54d239 100644
--- a/webmagic-lucene/pom.xml
+++ b/webmagic-lucene/pom.xml
@@ -3,9 +3,9 @@
          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">
     <parent>
-        <artifactId>webmagic</artifactId>
+        <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <version>0.2.0</version>
+        <version>0.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-samples/pom.xml b/webmagic-samples/pom.xml
index 9d00d2f..98bc7a2 100644
--- a/webmagic-samples/pom.xml
+++ b/webmagic-samples/pom.xml
@@ -3,9 +3,9 @@
          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">
     <parent>
+        <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <artifactId>webmagic</artifactId>
-        <version>0.2.0</version>
+        <version>0.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-saxon/pom.xml b/webmagic-saxon/pom.xml
index a2db768..cfed143 100644
--- a/webmagic-saxon/pom.xml
+++ b/webmagic-saxon/pom.xml
@@ -3,9 +3,9 @@
          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">
     <parent>
+        <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <artifactId>webmagic</artifactId>
-        <version>0.2.0</version>
+        <version>0.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>
 
diff --git a/webmagic-selenium/pom.xml b/webmagic-selenium/pom.xml
index 814b7b3..4469e3e 100644
--- a/webmagic-selenium/pom.xml
+++ b/webmagic-selenium/pom.xml
@@ -3,9 +3,9 @@
          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">
     <parent>
+        <artifactId>webmagic-parent</artifactId>
         <groupId>us.codecraft</groupId>
-        <artifactId>webmagic</artifactId>
-        <version>0.2.0</version>
+        <version>0.2.1-SNAPSHOT</version>
     </parent>
     <modelVersion>4.0.0</modelVersion>