diff --git a/pmd-apex/pom.xml b/pmd-apex/pom.xml
index 3e73ee4e7d..a42b27c932 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>5.5.0</version>
+		<version>5.5.1-SNAPSHOT</version>
 	</parent>
 
 	<properties>
diff --git a/pmd-core/pom.xml b/pmd-core/pom.xml
index b960d2ead3..0e25016619 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-cpp/pom.xml b/pmd-cpp/pom.xml
index b84fa7bfd1..c13055445d 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-cs/pom.xml b/pmd-cs/pom.xml
index a0ade37092..7f6000e092 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-dist/pom.xml b/pmd-dist/pom.xml
index b5c443cf50..a0cac226cd 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-fortran/pom.xml b/pmd-fortran/pom.xml
index 79f325b176..1a3988da55 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-go/pom.xml b/pmd-go/pom.xml
index 4f8cf9d30d..1bcaaaf4f4 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-java/pom.xml b/pmd-java/pom.xml
index 452ebefc5d..b24b0f8dd8 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-java8/pom.xml b/pmd-java8/pom.xml
index fe2cb9808b..00cf8d458c 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-javascript/pom.xml b/pmd-javascript/pom.xml
index 697b4cc15e..477056e069 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-jsp/pom.xml b/pmd-jsp/pom.xml
index 470794076f..50c275d543 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-matlab/pom.xml b/pmd-matlab/pom.xml
index 14edb6d170..09e4a9e233 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-objectivec/pom.xml b/pmd-objectivec/pom.xml
index 0501852ee4..dda1f6f8fe 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-perl/pom.xml b/pmd-perl/pom.xml
index 0a97578c7a..2a30839e34 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-php/pom.xml b/pmd-php/pom.xml
index 0e1889fd6b..eea247a546 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-plsql/pom.xml b/pmd-plsql/pom.xml
index 6e4c88ab9f..8536068f08 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-python/pom.xml b/pmd-python/pom.xml
index 76c582702f..40a942fc72 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-ruby/pom.xml b/pmd-ruby/pom.xml
index ccf5c0c638..230f5ca87f 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-scala/pom.xml b/pmd-scala/pom.xml
index 1ebe21ba65..c969818ab9 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-swift/pom.xml b/pmd-swift/pom.xml
index 284c7b0fd9..0e2392a3eb 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-test/pom.xml b/pmd-test/pom.xml
index da65aa5295..8a12b42671 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-ui/pom.xml b/pmd-ui/pom.xml
index c5fb9e4e89..04d01ae49b 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-vm/pom.xml b/pmd-vm/pom.xml
index 41b8992783..8a3a590fc4 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pmd-xml/pom.xml b/pmd-xml/pom.xml
index 97e0b1f308..ac2c2c544b 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>5.5.0</version>
+        <version>5.5.1-SNAPSHOT</version>
     </parent>
 
     <properties>
diff --git a/pom.xml b/pom.xml
index 463d8acf7b..389931037a 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>5.5.0</version>
+    <version>5.5.1-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>PMD</name>
 
@@ -244,7 +244,7 @@
         <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/5.5.0</tag>
+        <tag>HEAD</tag>
     </scm>
     <distributionManagement>
         <site>