diff --git a/dubbo-cluster/pom.xml b/dubbo-cluster/pom.xml
index 1bfe67d447..386f96852b 100644
--- a/dubbo-cluster/pom.xml
+++ b/dubbo-cluster/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-cluster</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-common/pom.xml b/dubbo-common/pom.xml
index c38a7a0b2d..36c15f3675 100644
--- a/dubbo-common/pom.xml
+++ b/dubbo-common/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-common</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-config/dubbo-config-api/pom.xml b/dubbo-config/dubbo-config-api/pom.xml
index 84953587be..9382ae61a9 100644
--- a/dubbo-config/dubbo-config-api/pom.xml
+++ b/dubbo-config/dubbo-config-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-config</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-config-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-config/dubbo-config-spring/pom.xml b/dubbo-config/dubbo-config-spring/pom.xml
index a6dd03a317..b0107246db 100644
--- a/dubbo-config/dubbo-config-spring/pom.xml
+++ b/dubbo-config/dubbo-config-spring/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-config</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-config-spring</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-config/pom.xml b/dubbo-config/pom.xml
index 4044e0a34d..a6410d2fe8 100644
--- a/dubbo-config/pom.xml
+++ b/dubbo-config/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-config</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The config module of dubbo project</description>
diff --git a/dubbo-container/dubbo-container-api/pom.xml b/dubbo-container/dubbo-container-api/pom.xml
index 109c77f746..7141563209 100644
--- a/dubbo-container/dubbo-container-api/pom.xml
+++ b/dubbo-container/dubbo-container-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-container</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-container-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-container/dubbo-container-jetty/pom.xml b/dubbo-container/dubbo-container-jetty/pom.xml
index fba0cff793..966727b17f 100644
--- a/dubbo-container/dubbo-container-jetty/pom.xml
+++ b/dubbo-container/dubbo-container-jetty/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-container</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-container-jetty</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-container/dubbo-container-log4j/pom.xml b/dubbo-container/dubbo-container-log4j/pom.xml
index 32c9af6aac..207958c1f6 100644
--- a/dubbo-container/dubbo-container-log4j/pom.xml
+++ b/dubbo-container/dubbo-container-log4j/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-container</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-container-log4j</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-container/dubbo-container-spring/pom.xml b/dubbo-container/dubbo-container-spring/pom.xml
index 756619a431..1f13e68d97 100644
--- a/dubbo-container/dubbo-container-spring/pom.xml
+++ b/dubbo-container/dubbo-container-spring/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-container</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-container-spring</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-container/pom.xml b/dubbo-container/pom.xml
index 0f1525fe99..501ced387a 100644
--- a/dubbo-container/pom.xml
+++ b/dubbo-container/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-container</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The container module of dubbo project</description>
diff --git a/dubbo-demo/dubbo-demo-api/pom.xml b/dubbo-demo/dubbo-demo-api/pom.xml
index c5721fe0a3..fe16f569ab 100644
--- a/dubbo-demo/dubbo-demo-api/pom.xml
+++ b/dubbo-demo/dubbo-demo-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-demo</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-demo-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-demo/dubbo-demo-consumer/pom.xml b/dubbo-demo/dubbo-demo-consumer/pom.xml
index bf473d336f..58405ed79d 100644
--- a/dubbo-demo/dubbo-demo-consumer/pom.xml
+++ b/dubbo-demo/dubbo-demo-consumer/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-demo</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-demo-consumer</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-demo/dubbo-demo-examples/pom.xml b/dubbo-demo/dubbo-demo-examples/pom.xml
index 2bba7ec0e5..89207d315a 100644
--- a/dubbo-demo/dubbo-demo-examples/pom.xml
+++ b/dubbo-demo/dubbo-demo-examples/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-demo</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-demo-examples</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-demo/dubbo-demo-provider/pom.xml b/dubbo-demo/dubbo-demo-provider/pom.xml
index 986e3bf249..ce11750c48 100644
--- a/dubbo-demo/dubbo-demo-provider/pom.xml
+++ b/dubbo-demo/dubbo-demo-provider/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-demo</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-demo-provider</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-demo/pom.xml b/dubbo-demo/pom.xml
index c8ea0b4199..6b8802a2af 100644
--- a/dubbo-demo/pom.xml
+++ b/dubbo-demo/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-demo</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The demo module of dubbo project</description>
diff --git a/dubbo-filter/dubbo-filter-cache/pom.xml b/dubbo-filter/dubbo-filter-cache/pom.xml
index e8311474a6..110bdb27db 100644
--- a/dubbo-filter/dubbo-filter-cache/pom.xml
+++ b/dubbo-filter/dubbo-filter-cache/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-filter</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-filter-cache</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-filter/dubbo-filter-validation/pom.xml b/dubbo-filter/dubbo-filter-validation/pom.xml
index bdd428d3a5..6fb5f57d18 100644
--- a/dubbo-filter/dubbo-filter-validation/pom.xml
+++ b/dubbo-filter/dubbo-filter-validation/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-filter</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-filter-validation</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-filter/pom.xml b/dubbo-filter/pom.xml
index 6f131f9351..9d71a877a3 100644
--- a/dubbo-filter/pom.xml
+++ b/dubbo-filter/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-filter</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The filter module of dubbo project</description>
diff --git a/dubbo-monitor/dubbo-monitor-api/pom.xml b/dubbo-monitor/dubbo-monitor-api/pom.xml
index b6bcb55d12..0ac236b9c4 100644
--- a/dubbo-monitor/dubbo-monitor-api/pom.xml
+++ b/dubbo-monitor/dubbo-monitor-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-monitor</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-monitor-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-monitor/dubbo-monitor-default/pom.xml b/dubbo-monitor/dubbo-monitor-default/pom.xml
index 5fe1ca51dd..3a970c941d 100644
--- a/dubbo-monitor/dubbo-monitor-default/pom.xml
+++ b/dubbo-monitor/dubbo-monitor-default/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-monitor</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-monitor-default</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-monitor/pom.xml b/dubbo-monitor/pom.xml
index 0fe0641a24..b8d6f26f20 100644
--- a/dubbo-monitor/pom.xml
+++ b/dubbo-monitor/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-monitor</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The monitor module of dubbo project</description>
diff --git a/dubbo-registry/dubbo-registry-api/pom.xml b/dubbo-registry/dubbo-registry-api/pom.xml
index ca9fa219d8..3655630c2d 100644
--- a/dubbo-registry/dubbo-registry-api/pom.xml
+++ b/dubbo-registry/dubbo-registry-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-registry</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-default/pom.xml b/dubbo-registry/dubbo-registry-default/pom.xml
index 163dcf55cd..47c71861cd 100644
--- a/dubbo-registry/dubbo-registry-default/pom.xml
+++ b/dubbo-registry/dubbo-registry-default/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-registry</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry-default</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-multicast/pom.xml b/dubbo-registry/dubbo-registry-multicast/pom.xml
index 2135e40bae..1da40182ac 100644
--- a/dubbo-registry/dubbo-registry-multicast/pom.xml
+++ b/dubbo-registry/dubbo-registry-multicast/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-registry</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry-multicast</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-redis/pom.xml b/dubbo-registry/dubbo-registry-redis/pom.xml
index c0cf4bf487..7d6c49d65b 100644
--- a/dubbo-registry/dubbo-registry-redis/pom.xml
+++ b/dubbo-registry/dubbo-registry-redis/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-registry</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry-redis</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-registry/dubbo-registry-zookeeper/pom.xml b/dubbo-registry/dubbo-registry-zookeeper/pom.xml
index c02d0ba07d..a4ef24b83f 100644
--- a/dubbo-registry/dubbo-registry-zookeeper/pom.xml
+++ b/dubbo-registry/dubbo-registry-zookeeper/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-registry</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry-zookeeper</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-registry/pom.xml b/dubbo-registry/pom.xml
index 4febc46a59..c13e95398f 100644
--- a/dubbo-registry/pom.xml
+++ b/dubbo-registry/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The registry module of dubbo project</description>
diff --git a/dubbo-remoting/dubbo-remoting-api/pom.xml b/dubbo-remoting/dubbo-remoting-api/pom.xml
index 67f9abfd1f..0977080ee4 100644
--- a/dubbo-remoting/dubbo-remoting-api/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-grizzly/pom.xml b/dubbo-remoting/dubbo-remoting-grizzly/pom.xml
index 9e4ab69f1e..39e4b38f7a 100644
--- a/dubbo-remoting/dubbo-remoting-grizzly/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-grizzly/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-grizzly</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-http/pom.xml b/dubbo-remoting/dubbo-remoting-http/pom.xml
index 40201bc0b1..b7232ac6f7 100644
--- a/dubbo-remoting/dubbo-remoting-http/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-http/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-http</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-mina/pom.xml b/dubbo-remoting/dubbo-remoting-mina/pom.xml
index 30d6cf5bbd..74be16e4f0 100644
--- a/dubbo-remoting/dubbo-remoting-mina/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-mina/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-mina</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-netty/pom.xml b/dubbo-remoting/dubbo-remoting-netty/pom.xml
index ab7aa9c5ca..ac9189503b 100644
--- a/dubbo-remoting/dubbo-remoting-netty/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-netty/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-netty</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-p2p/pom.xml b/dubbo-remoting/dubbo-remoting-p2p/pom.xml
index 3b44beb51b..a880414923 100644
--- a/dubbo-remoting/dubbo-remoting-p2p/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-p2p/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-p2p</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml b/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml
index 9b552b90e8..3ad86f56e5 100644
--- a/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml
+++ b/dubbo-remoting/dubbo-remoting-zookeeper/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-remoting</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting-zookeeper</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-remoting/pom.xml b/dubbo-remoting/pom.xml
index 92f938bd8a..5ef1fc8698 100644
--- a/dubbo-remoting/pom.xml
+++ b/dubbo-remoting/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-remoting</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The remoting module of dubbo project</description>
diff --git a/dubbo-rpc/dubbo-rpc-api/pom.xml b/dubbo-rpc/dubbo-rpc-api/pom.xml
index 3e09ee4230..7ccf1a4b91 100644
--- a/dubbo-rpc/dubbo-rpc-api/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-api/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-api</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-default/pom.xml b/dubbo-rpc/dubbo-rpc-default/pom.xml
index 17ff0007f6..9d93267052 100644
--- a/dubbo-rpc/dubbo-rpc-default/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-default/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-default</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-hessian/pom.xml b/dubbo-rpc/dubbo-rpc-hessian/pom.xml
index 919d5da6c1..67f93b8d2c 100644
--- a/dubbo-rpc/dubbo-rpc-hessian/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-hessian/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-hessian</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-http/pom.xml b/dubbo-rpc/dubbo-rpc-http/pom.xml
index 8d16d675b8..15bb5471ac 100644
--- a/dubbo-rpc/dubbo-rpc-http/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-http/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-http</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-injvm/pom.xml b/dubbo-rpc/dubbo-rpc-injvm/pom.xml
index 69b39e5b7e..0edec1e62e 100644
--- a/dubbo-rpc/dubbo-rpc-injvm/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-injvm/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-injvm</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-memcached/pom.xml b/dubbo-rpc/dubbo-rpc-memcached/pom.xml
index 962e15e26b..8ef741a52e 100644
--- a/dubbo-rpc/dubbo-rpc-memcached/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-memcached/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-memcached</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-redis/pom.xml b/dubbo-rpc/dubbo-rpc-redis/pom.xml
index 7957f4b55f..42475134cd 100644
--- a/dubbo-rpc/dubbo-rpc-redis/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-redis/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-redis</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-rmi/pom.xml b/dubbo-rpc/dubbo-rpc-rmi/pom.xml
index dafeec4b35..fbfb44b6ab 100644
--- a/dubbo-rpc/dubbo-rpc-rmi/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-rmi/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-rmi</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-thrift/pom.xml b/dubbo-rpc/dubbo-rpc-thrift/pom.xml
index fd8843746b..b991e969f9 100644
--- a/dubbo-rpc/dubbo-rpc-thrift/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-thrift/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-thrift</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/dubbo-rpc-webservice/pom.xml b/dubbo-rpc/dubbo-rpc-webservice/pom.xml
index 587f70802b..d5a5d20f99 100644
--- a/dubbo-rpc/dubbo-rpc-webservice/pom.xml
+++ b/dubbo-rpc/dubbo-rpc-webservice/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-rpc</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc-webservice</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-rpc/pom.xml b/dubbo-rpc/pom.xml
index af5c8713e6..019281dce5 100644
--- a/dubbo-rpc/pom.xml
+++ b/dubbo-rpc/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-rpc</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The rpc module of dubbo project</description>
diff --git a/dubbo-simple/dubbo-monitor-simple/pom.xml b/dubbo-simple/dubbo-monitor-simple/pom.xml
index 3e9206158b..74d641dd74 100644
--- a/dubbo-simple/dubbo-monitor-simple/pom.xml
+++ b/dubbo-simple/dubbo-monitor-simple/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-simple</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-monitor-simple</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-simple/dubbo-registry-simple/pom.xml b/dubbo-simple/dubbo-registry-simple/pom.xml
index 01e5983e75..216d46a5e6 100644
--- a/dubbo-simple/dubbo-registry-simple/pom.xml
+++ b/dubbo-simple/dubbo-registry-simple/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-simple</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-registry-simple</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-simple/pom.xml b/dubbo-simple/pom.xml
index e68eb3ae89..6518c92389 100644
--- a/dubbo-simple/pom.xml
+++ b/dubbo-simple/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-simple</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The simple implementation module of dubbo project</description>
diff --git a/dubbo-test/dubbo-test-benchmark/pom.xml b/dubbo-test/dubbo-test-benchmark/pom.xml
index 78823d64bc..69f7113426 100644
--- a/dubbo-test/dubbo-test-benchmark/pom.xml
+++ b/dubbo-test/dubbo-test-benchmark/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-test</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-test-benchmark</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-test/dubbo-test-compatibility/pom.xml b/dubbo-test/dubbo-test-compatibility/pom.xml
index 98945044ae..dc92db7dc2 100644
--- a/dubbo-test/dubbo-test-compatibility/pom.xml
+++ b/dubbo-test/dubbo-test-compatibility/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-test</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-test-compatibility</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-test/dubbo-test-integration/pom.xml b/dubbo-test/dubbo-test-integration/pom.xml
index 9018aff8dd..f44a290f4e 100644
--- a/dubbo-test/dubbo-test-integration/pom.xml
+++ b/dubbo-test/dubbo-test-integration/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-test</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-test-integration</artifactId>
 	<packaging>jar</packaging>
diff --git a/dubbo-test/pom.xml b/dubbo-test/pom.xml
index 417249a505..50b7de357c 100644
--- a/dubbo-test/pom.xml
+++ b/dubbo-test/pom.xml
@@ -19,10 +19,10 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo-test</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The test module of dubbo project</description>
diff --git a/dubbo/pom.xml b/dubbo/pom.xml
index 6bf48745eb..303f24bb18 100644
--- a/dubbo/pom.xml
+++ b/dubbo/pom.xml
@@ -19,7 +19,7 @@
 	<parent>
 		<groupId>com.alibaba</groupId>
 		<artifactId>dubbo-parent</artifactId>
-		<version>2.4.0-SNAPSHOT</version>
+		<version>2.3.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>dubbo</artifactId>
 	<packaging>jar</packaging>
diff --git a/pom.xml b/pom.xml
index 6365c0adf0..50998af57e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
 		<version>2.0</version>
 	</parent>
 	<artifactId>dubbo-parent</artifactId>
-	<version>2.4.0-SNAPSHOT</version>
+	<version>2.3.1-SNAPSHOT</version>
 	<packaging>pom</packaging>
 	<name>${project.artifactId}</name>
 	<description>The parent project of dubbo</description>