diff --git a/all/pom.xml b/all/pom.xml
index 16f70b0497..b6085abf0e 100644
--- a/all/pom.xml
+++ b/all/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-all</artifactId>
diff --git a/buffer/pom.xml b/buffer/pom.xml
index c59493bdc5..407d21f4d7 100644
--- a/buffer/pom.xml
+++ b/buffer/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-buffer</artifactId>
diff --git a/codec-http/pom.xml b/codec-http/pom.xml
index 932123090a..fa59a78371 100644
--- a/codec-http/pom.xml
+++ b/codec-http/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-codec-http</artifactId>
diff --git a/codec-socks/pom.xml b/codec-socks/pom.xml
index b217fc0106..eece4f4bce 100644
--- a/codec-socks/pom.xml
+++ b/codec-socks/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-codec-socks</artifactId>
diff --git a/codec/pom.xml b/codec/pom.xml
index 9bac7fd9c4..0296422f4b 100644
--- a/codec/pom.xml
+++ b/codec/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-codec</artifactId>
diff --git a/common/pom.xml b/common/pom.xml
index f70339a49d..7465d1f4fd 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-common</artifactId>
diff --git a/example/pom.xml b/example/pom.xml
index adcf0d24e4..0ec45c5fbd 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-example</artifactId>
diff --git a/handler/pom.xml b/handler/pom.xml
index b5f910dc24..3d8a4cb883 100644
--- a/handler/pom.xml
+++ b/handler/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-handler</artifactId>
diff --git a/microbench/pom.xml b/microbench/pom.xml
index c279a9db92..a0a594774a 100644
--- a/microbench/pom.xml
+++ b/microbench/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-microbench</artifactId>
diff --git a/pom.xml b/pom.xml
index 01196d2a80..4b9d7f7c1a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   <groupId>io.netty</groupId>
   <artifactId>netty-parent</artifactId>
   <packaging>pom</packaging>
-  <version>4.0.21.Final-SNAPSHOT</version>
+  <version>4.0.21.Final</version>
 
   <name>Netty</name>
   <url>http://netty.io/</url>
@@ -53,7 +53,7 @@
     <url>https://github.com/netty/netty</url>
     <connection>scm:git:git://github.com/netty/netty.git</connection>
     <developerConnection>scm:git:ssh://git@github.com/netty/netty.git</developerConnection>
-    <tag>HEAD</tag>
+    <tag>netty-4.0.21.Final</tag>
   </scm>
 
   <developers>
diff --git a/tarball/pom.xml b/tarball/pom.xml
index c271b36745..669c2c5b31 100644
--- a/tarball/pom.xml
+++ b/tarball/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-tarball</artifactId>
diff --git a/testsuite/pom.xml b/testsuite/pom.xml
index 637479d333..0de0b43e6a 100644
--- a/testsuite/pom.xml
+++ b/testsuite/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-testsuite</artifactId>
diff --git a/transport-native-epoll/pom.xml b/transport-native-epoll/pom.xml
index a3080e83fd..381a07e86e 100644
--- a/transport-native-epoll/pom.xml
+++ b/transport-native-epoll/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
   <artifactId>netty-transport-native-epoll</artifactId>
 
diff --git a/transport-rxtx/pom.xml b/transport-rxtx/pom.xml
index 77d2390cff..23b728cd32 100644
--- a/transport-rxtx/pom.xml
+++ b/transport-rxtx/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-transport-rxtx</artifactId>
diff --git a/transport-sctp/pom.xml b/transport-sctp/pom.xml
index aba04cc1b8..8f3e11195c 100644
--- a/transport-sctp/pom.xml
+++ b/transport-sctp/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-transport-sctp</artifactId>
diff --git a/transport-udt/pom.xml b/transport-udt/pom.xml
index ef7e855b6c..d3d201982d 100644
--- a/transport-udt/pom.xml
+++ b/transport-udt/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-transport-udt</artifactId>
diff --git a/transport/pom.xml b/transport/pom.xml
index 7a6aa1572b..145f87ecfb 100644
--- a/transport/pom.xml
+++ b/transport/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.21.Final-SNAPSHOT</version>
+    <version>4.0.21.Final</version>
   </parent>
 
   <artifactId>netty-transport</artifactId>