diff --git a/all/pom.xml b/all/pom.xml
index 7ff608bbbc..fff6dcb405 100644
--- a/all/pom.xml
+++ b/all/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-all</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index 8d1d0a8ca6..e5eed07b50 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -25,7 +25,7 @@
 
   <groupId>io.netty</groupId>
   <artifactId>netty-bom</artifactId>
-  <version>4.0.56.Final</version>
+  <version>4.0.57.Final-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Netty/BOM</name>
@@ -49,7 +49,7 @@
     <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>netty-4.0.56.Final</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <developers>
@@ -69,77 +69,77 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-buffer</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-haproxy</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-http</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-socks</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-common</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-handler</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-rxtx</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-sctp</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-udt</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-example</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.0.56.Final</version>
+        <version>4.0.57.Final-SNAPSHOT</version>
         <classifier>linux-x86_64</classifier>
       </dependency>
     </dependencies>
diff --git a/buffer/pom.xml b/buffer/pom.xml
index 1113ffd7ed..a3697e812c 100644
--- a/buffer/pom.xml
+++ b/buffer/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-buffer</artifactId>
diff --git a/codec-haproxy/pom.xml b/codec-haproxy/pom.xml
index 19ec05d00e..f4d6e11764 100644
--- a/codec-haproxy/pom.xml
+++ b/codec-haproxy/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-haproxy</artifactId>
diff --git a/codec-http/pom.xml b/codec-http/pom.xml
index 2ec276f2ef..a7efc1afa7 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>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-http</artifactId>
diff --git a/codec-socks/pom.xml b/codec-socks/pom.xml
index 6cba7aa531..e68611365f 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>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-socks</artifactId>
diff --git a/codec/pom.xml b/codec/pom.xml
index c972e92ca0..e531d1f06c 100644
--- a/codec/pom.xml
+++ b/codec/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec</artifactId>
diff --git a/common/pom.xml b/common/pom.xml
index 82dc60eed1..2115a8fbca 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-common</artifactId>
diff --git a/dev-tools/pom.xml b/dev-tools/pom.xml
index d69ecdf866..60dcefc079 100644
--- a/dev-tools/pom.xml
+++ b/dev-tools/pom.xml
@@ -25,7 +25,7 @@
 
   <groupId>io.netty</groupId>
   <artifactId>netty-dev-tools</artifactId>
-  <version>4.0.56.Final</version>
+  <version>4.0.57.Final-SNAPSHOT</version>
 
   <name>Netty/Dev-Tools</name>
 
@@ -50,8 +50,4 @@
       </plugin>
     </plugins>
   </build>
-
-  <scm>
-    <tag>netty-4.0.56.Final</tag>
-  </scm>
 </project>
diff --git a/example/pom.xml b/example/pom.xml
index a7afcff04a..3d0d81a18a 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-example</artifactId>
diff --git a/handler/pom.xml b/handler/pom.xml
index c3dc7e3ce6..8e1cdc5b9d 100644
--- a/handler/pom.xml
+++ b/handler/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-handler</artifactId>
diff --git a/microbench/pom.xml b/microbench/pom.xml
index eead67a1f3..a4a3e1ab28 100644
--- a/microbench/pom.xml
+++ b/microbench/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-microbench</artifactId>
diff --git a/pom.xml b/pom.xml
index 0ba83ae25d..ced0ce1d35 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   <groupId>io.netty</groupId>
   <artifactId>netty-parent</artifactId>
   <packaging>pom</packaging>
-  <version>4.0.56.Final</version>
+  <version>4.0.57.Final-SNAPSHOT</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>netty-4.0.56.Final</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <developers>
diff --git a/tarball/pom.xml b/tarball/pom.xml
index fd9d6dc0a3..4b2962660d 100644
--- a/tarball/pom.xml
+++ b/tarball/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-tarball</artifactId>
diff --git a/testsuite-autobahn/pom.xml b/testsuite-autobahn/pom.xml
index 0cefd89e52..2daf3abacd 100644
--- a/testsuite-autobahn/pom.xml
+++ b/testsuite-autobahn/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-autobahn</artifactId>
diff --git a/testsuite-osgi/pom.xml b/testsuite-osgi/pom.xml
index f2bc1a3c26..b0434ef7fc 100644
--- a/testsuite-osgi/pom.xml
+++ b/testsuite-osgi/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-osgi</artifactId>
diff --git a/testsuite/pom.xml b/testsuite/pom.xml
index 307d833324..cf527cba5d 100644
--- a/testsuite/pom.xml
+++ b/testsuite/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite</artifactId>
diff --git a/transport-native-epoll/pom.xml b/transport-native-epoll/pom.xml
index 2bc68df453..f33c12879e 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>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-transport-native-epoll</artifactId>
 
diff --git a/transport-rxtx/pom.xml b/transport-rxtx/pom.xml
index d7fee8add8..bf3fbf3270 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>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-rxtx</artifactId>
diff --git a/transport-sctp/pom.xml b/transport-sctp/pom.xml
index a0efbdd131..3d4bbc1b3d 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>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-sctp</artifactId>
diff --git a/transport-udt/pom.xml b/transport-udt/pom.xml
index ddd282fef0..a7bceb51e6 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>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-udt</artifactId>
diff --git a/transport/pom.xml b/transport/pom.xml
index 6f9e664049..de2ad3e631 100644
--- a/transport/pom.xml
+++ b/transport/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.0.56.Final</version>
+    <version>4.0.57.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport</artifactId>