diff --git a/pmd-apex/pom.xml b/pmd-apex/pom.xml
index 15c40a5cd3..279fb91358 100644
--- a/pmd-apex/pom.xml
+++ b/pmd-apex/pom.xml
@@ -7,7 +7,7 @@
 	<parent>
 		<groupId>net.sourceforge.pmd</groupId>
 		<artifactId>pmd</artifactId>
-		<version>5.5.5</version>
+		<version>5.5.6-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/pmd-core/pom.xml b/pmd-core/pom.xml
index f5dbed2d7f..fdc262c81c 100644
--- a/pmd-core/pom.xml
+++ b/pmd-core/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-cpp/pom.xml b/pmd-cpp/pom.xml
index 61a3a74aa6..ee9af62a31 100644
--- a/pmd-cpp/pom.xml
+++ b/pmd-cpp/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-cs/pom.xml b/pmd-cs/pom.xml
index bdc2466207..518ebb5af3 100644
--- a/pmd-cs/pom.xml
+++ b/pmd-cs/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-dist/pom.xml b/pmd-dist/pom.xml
index 16efe7b2a5..d9194bcda1 100644
--- a/pmd-dist/pom.xml
+++ b/pmd-dist/pom.xml
@@ -8,7 +8,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-fortran/pom.xml b/pmd-fortran/pom.xml
index e81c70ed80..85e2cebbef 100644
--- a/pmd-fortran/pom.xml
+++ b/pmd-fortran/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-go/pom.xml b/pmd-go/pom.xml
index a96313eec5..c0942d07d8 100644
--- a/pmd-go/pom.xml
+++ b/pmd-go/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-groovy/pom.xml b/pmd-groovy/pom.xml
index b06da22df3..a0142cd696 100644
--- a/pmd-groovy/pom.xml
+++ b/pmd-groovy/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-java/pom.xml b/pmd-java/pom.xml
index 6de5f2aa50..0379cee69c 100644
--- a/pmd-java/pom.xml
+++ b/pmd-java/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-java8/pom.xml b/pmd-java8/pom.xml
index 184674d371..703514fcef 100644
--- a/pmd-java8/pom.xml
+++ b/pmd-java8/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-javascript/pom.xml b/pmd-javascript/pom.xml
index 020b8cd9dd..34e35bce2a 100644
--- a/pmd-javascript/pom.xml
+++ b/pmd-javascript/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-jsp/pom.xml b/pmd-jsp/pom.xml
index 17fe7e5837..0533529074 100644
--- a/pmd-jsp/pom.xml
+++ b/pmd-jsp/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-matlab/pom.xml b/pmd-matlab/pom.xml
index 2071a99774..223d5e3614 100644
--- a/pmd-matlab/pom.xml
+++ b/pmd-matlab/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-objectivec/pom.xml b/pmd-objectivec/pom.xml
index 3e87e96492..3d94fb4a45 100644
--- a/pmd-objectivec/pom.xml
+++ b/pmd-objectivec/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-perl/pom.xml b/pmd-perl/pom.xml
index 0b02920253..6fc135a00d 100644
--- a/pmd-perl/pom.xml
+++ b/pmd-perl/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-php/pom.xml b/pmd-php/pom.xml
index e37ef89286..9664a571c1 100644
--- a/pmd-php/pom.xml
+++ b/pmd-php/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-plsql/pom.xml b/pmd-plsql/pom.xml
index 70ed75e7c2..1ced03dff9 100644
--- a/pmd-plsql/pom.xml
+++ b/pmd-plsql/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-python/pom.xml b/pmd-python/pom.xml
index cbce4253b8..181f0eeee5 100644
--- a/pmd-python/pom.xml
+++ b/pmd-python/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-ruby/pom.xml b/pmd-ruby/pom.xml
index 070d856c45..713ca97854 100644
--- a/pmd-ruby/pom.xml
+++ b/pmd-ruby/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-scala/pom.xml b/pmd-scala/pom.xml
index 81160306f9..8fc506b3bc 100644
--- a/pmd-scala/pom.xml
+++ b/pmd-scala/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-swift/pom.xml b/pmd-swift/pom.xml
index 8790feccbb..6ecd221fa4 100644
--- a/pmd-swift/pom.xml
+++ b/pmd-swift/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-test/pom.xml b/pmd-test/pom.xml
index c11eb06e51..59ccd24366 100644
--- a/pmd-test/pom.xml
+++ b/pmd-test/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-ui/pom.xml b/pmd-ui/pom.xml
index e843592044..ce6fcbefd4 100644
--- a/pmd-ui/pom.xml
+++ b/pmd-ui/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-vm/pom.xml b/pmd-vm/pom.xml
index a09cbfad78..0b05c9051c 100644
--- a/pmd-vm/pom.xml
+++ b/pmd-vm/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-xml/pom.xml b/pmd-xml/pom.xml
index 46f6983e5c..171aca425b 100644
--- a/pmd-xml/pom.xml
+++ b/pmd-xml/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>5.5.5</version>
+        <version>5.5.6-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pom.xml b/pom.xml
index ec4db9d04c..ffd89c2d33 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>net.sourceforge.pmd</groupId>
     <artifactId>pmd</artifactId>
-    <version>5.5.5</version>
+    <version>5.5.6-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>PMD</name>
 
@@ -234,7 +234,7 @@ Additionally it includes CPD, the copy-paste-detector. CPD finds duplicated code
         <connection>scm:git:git://github.com/pmd/pmd.git</connection>
         <developerConnection>scm:git:ssh://git@github.com/pmd/pmd.git</developerConnection>
         <url>https://github.com/pmd/pmd</url>
-        <tag>pmd_releases/5.5.5</tag>
+        <tag>HEAD</tag>
     </scm>
     <distributionManagement>
         <snapshotRepository>