diff --git a/client/pom.xml b/client/pom.xml
index 4c13d915691..e4c443d8576 100644
--- a/client/pom.xml
+++ b/client/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/common/pom.xml b/common/pom.xml
index 88c74b0dc6b..c580566bdb4 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/examples/pom.xml b/examples/pom.xml
index b07f0a03bcb..6714b54dae3 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -9,7 +9,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/index-common/pom.xml b/index-common/pom.xml
index d6d2e3d7bd1..fd445939465 100644
--- a/index-common/pom.xml
+++ b/index-common/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/indexer/pom.xml b/indexer/pom.xml
index 5256f75546b..30dc94cdcac 100644
--- a/indexer/pom.xml
+++ b/indexer/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/merger/pom.xml b/merger/pom.xml
index 89f916cdcea..275de207ab7 100644
--- a/merger/pom.xml
+++ b/merger/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/pom.xml b/pom.xml
index 83ef3e56ce7..4325fa699ce 100644
--- a/pom.xml
+++ b/pom.xml
@@ -23,7 +23,7 @@
     <groupId>com.metamx</groupId>
     <artifactId>druid</artifactId>
     <packaging>pom</packaging>
-    <version>0.4.20</version>
+    <version>0.4.21-SNAPSHOT</version>
     <name>druid</name>
     <description>druid</description>
     <scm>
diff --git a/realtime/pom.xml b/realtime/pom.xml
index 7f2e39637c2..00b62243455 100644
--- a/realtime/pom.xml
+++ b/realtime/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/server/pom.xml b/server/pom.xml
index 6211bbbdef2..cd25b8366f8 100644
--- a/server/pom.xml
+++ b/server/pom.xml
@@ -28,7 +28,7 @@
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>
diff --git a/services/pom.xml b/services/pom.xml
index ee4e6ea14f8..3f5d1f3f764 100644
--- a/services/pom.xml
+++ b/services/pom.xml
@@ -24,11 +24,11 @@
     <artifactId>druid-services</artifactId>
     <name>druid-services</name>
     <description>druid-services</description>
-    <version>0.4.20</version>
+    <version>0.4.21-SNAPSHOT</version>
     <parent>
         <groupId>com.metamx</groupId>
         <artifactId>druid</artifactId>
-        <version>0.4.20</version>
+        <version>0.4.21-SNAPSHOT</version>
     </parent>
 
     <dependencies>