diff --git a/pmd-apex/pom.xml b/pmd-apex/pom.xml
index a42b27c932..7d219c67f8 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>5.5.1-SNAPSHOT</version>
+		<version>5.5.1</version>
 	</parent>
 
 	<properties>
diff --git a/pmd-core/pom.xml b/pmd-core/pom.xml
index 0e25016619..ed2a4d8fc0 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-cpp/pom.xml b/pmd-cpp/pom.xml
index c13055445d..df5e42ee59 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-cs/pom.xml b/pmd-cs/pom.xml
index 7f6000e092..cbc7536c8c 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-dist/pom.xml b/pmd-dist/pom.xml
index a0cac226cd..3aaa232f17 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-fortran/pom.xml b/pmd-fortran/pom.xml
index 1a3988da55..54386d46b1 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-go/pom.xml b/pmd-go/pom.xml
index 1bcaaaf4f4..e26288cce5 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-java/pom.xml b/pmd-java/pom.xml
index b24b0f8dd8..eb0443e899 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-java8/pom.xml b/pmd-java8/pom.xml
index 00cf8d458c..10b083a161 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-javascript/pom.xml b/pmd-javascript/pom.xml
index a89ba6281a..875f4ec641 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-jsp/pom.xml b/pmd-jsp/pom.xml
index 50c275d543..c9e888cec0 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-matlab/pom.xml b/pmd-matlab/pom.xml
index 09e4a9e233..05b6103749 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-objectivec/pom.xml b/pmd-objectivec/pom.xml
index dda1f6f8fe..b6e3b47e20 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-perl/pom.xml b/pmd-perl/pom.xml
index 2a30839e34..0061cff60c 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-php/pom.xml b/pmd-php/pom.xml
index eea247a546..f6cc7eaa58 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-plsql/pom.xml b/pmd-plsql/pom.xml
index 8536068f08..0f8cdfe440 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-python/pom.xml b/pmd-python/pom.xml
index 40a942fc72..7dd1f67db5 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-ruby/pom.xml b/pmd-ruby/pom.xml
index 230f5ca87f..1bfdae72f4 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-scala/pom.xml b/pmd-scala/pom.xml
index c969818ab9..e7c04b8bee 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-swift/pom.xml b/pmd-swift/pom.xml
index 0e2392a3eb..febc2e442d 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-test/pom.xml b/pmd-test/pom.xml
index 8a12b42671..3855963bea 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-ui/pom.xml b/pmd-ui/pom.xml
index 04d01ae49b..6c70c3d24f 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-vm/pom.xml b/pmd-vm/pom.xml
index 8a3a590fc4..992c6fc9c5 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pmd-xml/pom.xml b/pmd-xml/pom.xml
index ac2c2c544b..c0e0fea8f8 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>5.5.1-SNAPSHOT</version>
+        <version>5.5.1</version>
     </parent>
 
     <properties>
diff --git a/pom.xml b/pom.xml
index c49af1a10e..66bd239490 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>5.5.1-SNAPSHOT</version>
+    <version>5.5.1</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>HEAD</tag>
+        <tag>pmd_releases/5.5.1</tag>
     </scm>
     <distributionManagement>
         <site>