diff --git a/all/pom.xml b/all/pom.xml
index 9a2689ae70..10f68dacc1 100644
--- a/all/pom.xml
+++ b/all/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-all</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index 4584422bb0..135b9dd651 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -25,7 +25,7 @@
 
   <groupId>io.netty</groupId>
   <artifactId>netty-bom</artifactId>
-  <version>4.1.54.Final</version>
+  <version>4.1.55.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-4.1.54.Final</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <developers>
@@ -69,188 +69,188 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-buffer</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-dns</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-haproxy</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-http</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-http2</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-memcache</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-mqtt</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-redis</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-smtp</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-socks</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-stomp</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-xml</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-common</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-dev-tools</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-handler</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-handler-proxy</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-resolver</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-resolver-dns</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-rxtx</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-sctp</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-udt</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-example</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-resolver-dns-native-macos</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-resolver-dns-native-macos</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>osx-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>linux-aarch64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>linux-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>osx-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>linux-aarch64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>linux-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-kqueue</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-kqueue</artifactId>
-        <version>4.1.54.Final</version>
+        <version>4.1.55.Final-SNAPSHOT</version>
         <classifier>osx-x86_64</classifier>
       </dependency>
     </dependencies>
diff --git a/buffer/pom.xml b/buffer/pom.xml
index 67c138cc1b..bce394fc3d 100644
--- a/buffer/pom.xml
+++ b/buffer/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-buffer</artifactId>
diff --git a/codec-dns/pom.xml b/codec-dns/pom.xml
index aa0c9fa536..38049f6e3b 100644
--- a/codec-dns/pom.xml
+++ b/codec-dns/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-dns</artifactId>
diff --git a/codec-haproxy/pom.xml b/codec-haproxy/pom.xml
index a6ad046ac3..9932b373a0 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-haproxy</artifactId>
diff --git a/codec-http/pom.xml b/codec-http/pom.xml
index 1b2770e851..2246085267 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-http</artifactId>
diff --git a/codec-http2/pom.xml b/codec-http2/pom.xml
index b2254f003f..9635e5f224 100644
--- a/codec-http2/pom.xml
+++ b/codec-http2/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-http2</artifactId>
diff --git a/codec-memcache/pom.xml b/codec-memcache/pom.xml
index aab3759936..0bccb27d61 100644
--- a/codec-memcache/pom.xml
+++ b/codec-memcache/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-memcache</artifactId>
diff --git a/codec-mqtt/pom.xml b/codec-mqtt/pom.xml
index fe28104624..0d6b98ebbb 100644
--- a/codec-mqtt/pom.xml
+++ b/codec-mqtt/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-mqtt</artifactId>
diff --git a/codec-redis/pom.xml b/codec-redis/pom.xml
index 2652b21fab..05a046be32 100644
--- a/codec-redis/pom.xml
+++ b/codec-redis/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-redis</artifactId>
diff --git a/codec-smtp/pom.xml b/codec-smtp/pom.xml
index 606f82d4e4..f3a131cadd 100644
--- a/codec-smtp/pom.xml
+++ b/codec-smtp/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-smtp</artifactId>
diff --git a/codec-socks/pom.xml b/codec-socks/pom.xml
index f622da937f..7c689fd435 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-socks</artifactId>
diff --git a/codec-stomp/pom.xml b/codec-stomp/pom.xml
index 601be46524..9ed676ef74 100644
--- a/codec-stomp/pom.xml
+++ b/codec-stomp/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-stomp</artifactId>
diff --git a/codec-xml/pom.xml b/codec-xml/pom.xml
index ac0f82224d..21677a0fea 100644
--- a/codec-xml/pom.xml
+++ b/codec-xml/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-xml</artifactId>
diff --git a/codec/pom.xml b/codec/pom.xml
index 2f7effc4c1..c1d9d8375f 100644
--- a/codec/pom.xml
+++ b/codec/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec</artifactId>
diff --git a/common/pom.xml b/common/pom.xml
index d82a3a0e43..4509eba036 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-common</artifactId>
diff --git a/dev-tools/pom.xml b/dev-tools/pom.xml
index 25109a554f..718e27158f 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>4.1.54.Final</version>
+  <version>4.1.55.Final-SNAPSHOT</version>
 
   <name>Netty/Dev-Tools</name>
 
@@ -50,8 +50,4 @@
       </plugin>
     </plugins>
   </build>
-
-  <scm>
-    <tag>netty-4.1.54.Final</tag>
-  </scm>
 </project>
diff --git a/example/pom.xml b/example/pom.xml
index 7683629ff2..401a48b15e 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-example</artifactId>
diff --git a/handler-proxy/pom.xml b/handler-proxy/pom.xml
index 7b784aab7b..06b8ea70e7 100644
--- a/handler-proxy/pom.xml
+++ b/handler-proxy/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-handler-proxy</artifactId>
diff --git a/handler/pom.xml b/handler/pom.xml
index 46c1d12401..057e5ab649 100644
--- a/handler/pom.xml
+++ b/handler/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-handler</artifactId>
diff --git a/microbench/pom.xml b/microbench/pom.xml
index 7f2696bc42..7aa85ae21a 100644
--- a/microbench/pom.xml
+++ b/microbench/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-microbench</artifactId>
diff --git a/pom.xml b/pom.xml
index 29145c0f55..55154158cb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   <groupId>io.netty</groupId>
   <artifactId>netty-parent</artifactId>
   <packaging>pom</packaging>
-  <version>4.1.54.Final</version>
+  <version>4.1.55.Final-SNAPSHOT</version>
 
   <name>Netty</name>
   <url>https://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-4.1.54.Final</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <developers>
diff --git a/resolver-dns-native-macos/pom.xml b/resolver-dns-native-macos/pom.xml
index b7fa2e9cba..ae70acba89 100644
--- a/resolver-dns-native-macos/pom.xml
+++ b/resolver-dns-native-macos/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-resolver-dns-native-macos</artifactId>
 
diff --git a/resolver-dns/pom.xml b/resolver-dns/pom.xml
index 3229f33f13..936ff0804d 100644
--- a/resolver-dns/pom.xml
+++ b/resolver-dns/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-resolver-dns</artifactId>
diff --git a/resolver/pom.xml b/resolver/pom.xml
index 7be5e58961..fe71fc1308 100644
--- a/resolver/pom.xml
+++ b/resolver/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-resolver</artifactId>
diff --git a/tarball/pom.xml b/tarball/pom.xml
index 2d2cb28cee..d436d2a0b2 100644
--- a/tarball/pom.xml
+++ b/tarball/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-tarball</artifactId>
diff --git a/testsuite-autobahn/pom.xml b/testsuite-autobahn/pom.xml
index 8ef5046375..037d56f19a 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-autobahn</artifactId>
diff --git a/testsuite-http2/pom.xml b/testsuite-http2/pom.xml
index 63f7a30d24..45315fd716 100644
--- a/testsuite-http2/pom.xml
+++ b/testsuite-http2/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-http2</artifactId>
diff --git a/testsuite-native-image-client/pom.xml b/testsuite-native-image-client/pom.xml
index 4f2726a81e..601b2950e5 100644
--- a/testsuite-native-image-client/pom.xml
+++ b/testsuite-native-image-client/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-native-image-client</artifactId>
diff --git a/testsuite-native-image/pom.xml b/testsuite-native-image/pom.xml
index a4f16142a4..438e5dad52 100644
--- a/testsuite-native-image/pom.xml
+++ b/testsuite-native-image/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-native-image</artifactId>
diff --git a/testsuite-osgi/pom.xml b/testsuite-osgi/pom.xml
index acc2991834..e10190c082 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-osgi</artifactId>
diff --git a/testsuite-shading/pom.xml b/testsuite-shading/pom.xml
index e625dfbefc..77f2b75167 100644
--- a/testsuite-shading/pom.xml
+++ b/testsuite-shading/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-shading</artifactId>
diff --git a/testsuite/pom.xml b/testsuite/pom.xml
index 887ef500f7..f88d010151 100644
--- a/testsuite/pom.xml
+++ b/testsuite/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite</artifactId>
diff --git a/transport-blockhound-tests/pom.xml b/transport-blockhound-tests/pom.xml
index dc7eba2158..2604387ece 100644
--- a/transport-blockhound-tests/pom.xml
+++ b/transport-blockhound-tests/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-blockhound-tests</artifactId>
diff --git a/transport-native-epoll/pom.xml b/transport-native-epoll/pom.xml
index a1a1cb6b22..1a7a48ea9d 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-transport-native-epoll</artifactId>
 
diff --git a/transport-native-kqueue/pom.xml b/transport-native-kqueue/pom.xml
index 0529f85792..49328e9715 100644
--- a/transport-native-kqueue/pom.xml
+++ b/transport-native-kqueue/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-transport-native-kqueue</artifactId>
 
diff --git a/transport-native-unix-common-tests/pom.xml b/transport-native-unix-common-tests/pom.xml
index ea53a1a19b..6ca5dca712 100644
--- a/transport-native-unix-common-tests/pom.xml
+++ b/transport-native-unix-common-tests/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-transport-native-unix-common-tests</artifactId>
 
diff --git a/transport-native-unix-common/pom.xml b/transport-native-unix-common/pom.xml
index 25039f6664..d49e00f42b 100644
--- a/transport-native-unix-common/pom.xml
+++ b/transport-native-unix-common/pom.xml
@@ -19,7 +19,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-transport-native-unix-common</artifactId>
 
diff --git a/transport-rxtx/pom.xml b/transport-rxtx/pom.xml
index 6302a228db..1601637b1c 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-rxtx</artifactId>
diff --git a/transport-sctp/pom.xml b/transport-sctp/pom.xml
index 2d2fd28afd..25fedd39e7 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-sctp</artifactId>
diff --git a/transport-udt/pom.xml b/transport-udt/pom.xml
index a15d634c18..e0cf95e2e0 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>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-udt</artifactId>
diff --git a/transport/pom.xml b/transport/pom.xml
index 128543240e..91c2265f94 100644
--- a/transport/pom.xml
+++ b/transport/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.54.Final</version>
+    <version>4.1.55.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport</artifactId>