diff --git a/dubbo-dependencies-bom/pom.xml b/dubbo-dependencies-bom/pom.xml
index 8a9f903ace9..5350e3e0d48 100644
--- a/dubbo-dependencies-bom/pom.xml
+++ b/dubbo-dependencies-bom/pom.xml
@@ -169,7 +169,7 @@
         <mortbay_jetty_version>6.1.26</mortbay_jetty_version>
         <portlet_version>2.0</portlet_version>
         <maven_flatten_version>1.1.0</maven_flatten_version>
-        <revision>2.7.20</revision>
+        <revision>2.7.21-SNAPSHOT</revision>
     </properties>
 
     <dependencyManagement>
diff --git a/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml b/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml
index 539688239c5..f3a8e41547e 100644
--- a/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml
+++ b/dubbo-dependencies/dubbo-dependencies-zookeeper/pom.xml
@@ -32,7 +32,7 @@
     <packaging>pom</packaging>
 
     <properties>
-        <revision>2.7.20</revision>
+        <revision>2.7.21-SNAPSHOT</revision>
         <maven_flatten_version>1.1.0</maven_flatten_version>
     </properties>
 
diff --git a/pom.xml b/pom.xml
index 06b14e086a8..732c744e44e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -127,7 +127,7 @@
         <arguments />
         <checkstyle.skip>true</checkstyle.skip>
         <rat.skip>true</rat.skip>
-        <revision>2.7.20</revision>
+        <revision>2.7.21-SNAPSHOT</revision>
     </properties>
 
     <modules>