diff --git a/all/pom.xml b/all/pom.xml
index 8127d7a4a530..13b2912869e3 100644
--- a/all/pom.xml
+++ b/all/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-all</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index 3caa8b2103a2..da96a0f7b1c6 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -25,7 +25,7 @@
 
   <groupId>io.netty</groupId>
   <artifactId>netty-bom</artifactId>
-  <version>4.1.39.Final</version>
+  <version>4.1.40.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-4.1.39.Final</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <developers>
@@ -69,165 +69,165 @@
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-buffer</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-dns</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-haproxy</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-http</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-http2</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-memcache</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-mqtt</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-redis</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-smtp</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-socks</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-stomp</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-codec-xml</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-common</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-dev-tools</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-handler</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-handler-proxy</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-resolver</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-resolver-dns</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-rxtx</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-sctp</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-udt</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-example</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-all</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
         <classifier>linux-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-unix-common</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
         <classifier>osx-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-epoll</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
         <classifier>linux-x86_64</classifier>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-kqueue</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
       </dependency>
       <dependency>
         <groupId>io.netty</groupId>
         <artifactId>netty-transport-native-kqueue</artifactId>
-        <version>4.1.39.Final</version>
+        <version>4.1.40.Final-SNAPSHOT</version>
         <classifier>osx-x86_64</classifier>
       </dependency>
     </dependencies>
diff --git a/buffer/pom.xml b/buffer/pom.xml
index fe31fde29de2..adb334ba19e3 100644
--- a/buffer/pom.xml
+++ b/buffer/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-buffer</artifactId>
diff --git a/codec-dns/pom.xml b/codec-dns/pom.xml
index 83071547f068..f63b1f0be265 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-dns</artifactId>
diff --git a/codec-haproxy/pom.xml b/codec-haproxy/pom.xml
index 9d8726d36e90..629c247e6c51 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-haproxy</artifactId>
diff --git a/codec-http/pom.xml b/codec-http/pom.xml
index d943b14b2d9b..f3560a201ffa 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-http</artifactId>
diff --git a/codec-http2/pom.xml b/codec-http2/pom.xml
index 5efe9c256b77..9283f15f29fc 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-http2</artifactId>
diff --git a/codec-memcache/pom.xml b/codec-memcache/pom.xml
index bcab57127f76..e3e6c69991e4 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-memcache</artifactId>
diff --git a/codec-mqtt/pom.xml b/codec-mqtt/pom.xml
index 378262fe9eef..9b22a91ae6ec 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-mqtt</artifactId>
diff --git a/codec-redis/pom.xml b/codec-redis/pom.xml
index 403f890eb5bb..845c70f16efb 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-redis</artifactId>
diff --git a/codec-smtp/pom.xml b/codec-smtp/pom.xml
index 7dbf50643b58..c58f7a2cb4d5 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-smtp</artifactId>
diff --git a/codec-socks/pom.xml b/codec-socks/pom.xml
index e4d5460982d4..89cc34e44272 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-socks</artifactId>
diff --git a/codec-stomp/pom.xml b/codec-stomp/pom.xml
index e5b7ebaf95d2..d6812dab701a 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-stomp</artifactId>
diff --git a/codec-xml/pom.xml b/codec-xml/pom.xml
index f3a8b45abbe2..36755f81f6e5 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec-xml</artifactId>
diff --git a/codec/pom.xml b/codec/pom.xml
index 831e755ad066..713f1ee184d5 100644
--- a/codec/pom.xml
+++ b/codec/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-codec</artifactId>
diff --git a/common/pom.xml b/common/pom.xml
index 0566893924b0..9cc5606fdc46 100644
--- a/common/pom.xml
+++ b/common/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-common</artifactId>
diff --git a/dev-tools/pom.xml b/dev-tools/pom.xml
index 757019d6fb4b..74a0ed7c6134 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>4.1.39.Final</version>
+  <version>4.1.40.Final-SNAPSHOT</version>
 
   <name>Netty/Dev-Tools</name>
 
@@ -50,8 +50,4 @@
       </plugin>
     </plugins>
   </build>
-
-  <scm>
-    <tag>netty-4.1.39.Final</tag>
-  </scm>
 </project>
diff --git a/example/pom.xml b/example/pom.xml
index 8e531f4ea450..b4a1ea04c5f6 100644
--- a/example/pom.xml
+++ b/example/pom.xml
@@ -21,7 +21,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-example</artifactId>
diff --git a/handler-proxy/pom.xml b/handler-proxy/pom.xml
index cc1cc2d21989..4e2418cd6ecb 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-handler-proxy</artifactId>
diff --git a/handler/pom.xml b/handler/pom.xml
index 2578101cc5ec..2459751f9900 100644
--- a/handler/pom.xml
+++ b/handler/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-handler</artifactId>
diff --git a/microbench/pom.xml b/microbench/pom.xml
index f2991fa1e8ec..0b3fcc920ed9 100644
--- a/microbench/pom.xml
+++ b/microbench/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-microbench</artifactId>
diff --git a/pom.xml b/pom.xml
index 747fca9c3e7b..7b0accc0fd77 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
   <groupId>io.netty</groupId>
   <artifactId>netty-parent</artifactId>
   <packaging>pom</packaging>
-  <version>4.1.39.Final</version>
+  <version>4.1.40.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-4.1.39.Final</tag>
+    <tag>HEAD</tag>
   </scm>
 
   <developers>
diff --git a/resolver-dns/pom.xml b/resolver-dns/pom.xml
index 6b39998897d2..6544136b698b 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-resolver-dns</artifactId>
diff --git a/resolver/pom.xml b/resolver/pom.xml
index 86546c3e601d..47e28cb102aa 100644
--- a/resolver/pom.xml
+++ b/resolver/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-resolver</artifactId>
diff --git a/tarball/pom.xml b/tarball/pom.xml
index 14e8c5b08b5d..133e49c2559e 100644
--- a/tarball/pom.xml
+++ b/tarball/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-tarball</artifactId>
diff --git a/testsuite-autobahn/pom.xml b/testsuite-autobahn/pom.xml
index 57fd786510cb..320fb98a673a 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-autobahn</artifactId>
diff --git a/testsuite-http2/pom.xml b/testsuite-http2/pom.xml
index dc625ee73b39..212ad0f9a4a5 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-http2</artifactId>
diff --git a/testsuite-native-image/pom.xml b/testsuite-native-image/pom.xml
index 2fe06608e26d..5384e69aebe5 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-native-image</artifactId>
diff --git a/testsuite-osgi/pom.xml b/testsuite-osgi/pom.xml
index 39dcd4e86466..75a275228cdd 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-osgi</artifactId>
diff --git a/testsuite-shading/pom.xml b/testsuite-shading/pom.xml
index 9b258af83fef..15ebe2f1e086 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite-shading</artifactId>
diff --git a/testsuite/pom.xml b/testsuite/pom.xml
index f489d0e6fe76..395820d94024 100644
--- a/testsuite/pom.xml
+++ b/testsuite/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-testsuite</artifactId>
diff --git a/transport-native-epoll/pom.xml b/transport-native-epoll/pom.xml
index d0f99a43f01d..257bbc6f49b7 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>4.1.39.Final</version>
+    <version>4.1.40.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 2fa252d059df..7c9e44945cdb 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>4.1.39.Final</version>
+    <version>4.1.40.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 fde01812bfbe..05c498d45c7e 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>4.1.39.Final</version>
+    <version>4.1.40.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 8c86d48a63a6..eeb394c68ca7 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
   <artifactId>netty-transport-native-unix-common</artifactId>
 
diff --git a/transport-rxtx/pom.xml b/transport-rxtx/pom.xml
index 000b561a6dfb..aa2dd8591d72 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-rxtx</artifactId>
diff --git a/transport-sctp/pom.xml b/transport-sctp/pom.xml
index dfe5389ee5b6..aa664a42f460 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-sctp</artifactId>
diff --git a/transport-udt/pom.xml b/transport-udt/pom.xml
index cb9d5c6b0220..d3b27ba3f408 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>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport-udt</artifactId>
diff --git a/transport/pom.xml b/transport/pom.xml
index abe4b73603db..15335c2d7ace 100644
--- a/transport/pom.xml
+++ b/transport/pom.xml
@@ -20,7 +20,7 @@
   <parent>
     <groupId>io.netty</groupId>
     <artifactId>netty-parent</artifactId>
-    <version>4.1.39.Final</version>
+    <version>4.1.40.Final-SNAPSHOT</version>
   </parent>
 
   <artifactId>netty-transport</artifactId>