diff --git a/pmd-apex-jorje/pom.xml b/pmd-apex-jorje/pom.xml
index b00cc9cd2c..155c12f379 100644
--- a/pmd-apex-jorje/pom.xml
+++ b/pmd-apex-jorje/pom.xml
@@ -8,7 +8,7 @@
   <parent>
     <groupId>net.sourceforge.pmd</groupId>
     <artifactId>pmd</artifactId>
-    <version>6.4.0-SNAPSHOT</version>
+    <version>6.4.0</version>
   </parent>
 
   <properties>
diff --git a/pmd-apex/pom.xml b/pmd-apex/pom.xml
index 8bb30068da..fd95470634 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>6.4.0-SNAPSHOT</version>
+    <version>6.4.0</version>
   </parent>
 
   <properties>
diff --git a/pmd-core/pom.xml b/pmd-core/pom.xml
index 29d8580eb1..b010416ad9 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-cpp/pom.xml b/pmd-cpp/pom.xml
index b03582eaf5..288267b9e7 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-cs/pom.xml b/pmd-cs/pom.xml
index 322815d5fd..2aba433a75 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-dist/pom.xml b/pmd-dist/pom.xml
index 7b02dccac9..62c7fe7ef9 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-doc/pom.xml b/pmd-doc/pom.xml
index 6b1ddc994e..c4bf936cad 100644
--- a/pmd-doc/pom.xml
+++ b/pmd-doc/pom.xml
@@ -8,7 +8,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <properties>
diff --git a/pmd-fortran/pom.xml b/pmd-fortran/pom.xml
index 58140d42c0..c147d8e676 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-go/pom.xml b/pmd-go/pom.xml
index 134dc79d3d..a8d77aa835 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-groovy/pom.xml b/pmd-groovy/pom.xml
index dbed31d5dc..20190411d6 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-java/pom.xml b/pmd-java/pom.xml
index 02f256b4e4..ace265bb88 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-java8/pom.xml b/pmd-java8/pom.xml
index 7004219bdb..fd2a3f8a88 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <properties>
diff --git a/pmd-javascript/pom.xml b/pmd-javascript/pom.xml
index eeb32aecb0..5a5dc85fcc 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-jsp/pom.xml b/pmd-jsp/pom.xml
index 6443b72a17..8aeb518f0b 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-matlab/pom.xml b/pmd-matlab/pom.xml
index 51ac22202b..89534f3de6 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-objectivec/pom.xml b/pmd-objectivec/pom.xml
index 2d55fbf456..90399611d6 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-perl/pom.xml b/pmd-perl/pom.xml
index 293daa2750..fca32b867e 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-php/pom.xml b/pmd-php/pom.xml
index 1aac0cfacb..9e707547e1 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-plsql/pom.xml b/pmd-plsql/pom.xml
index 8f2cee8bb7..6dab3d4a5a 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-python/pom.xml b/pmd-python/pom.xml
index 5f9c8aeae5..22ca53671b 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-ruby/pom.xml b/pmd-ruby/pom.xml
index ff2a491c12..d6f7bda100 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <dependencies>
diff --git a/pmd-scala/pom.xml b/pmd-scala/pom.xml
index 3df2b6648b..7123ebcec3 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <properties>
diff --git a/pmd-swift/pom.xml b/pmd-swift/pom.xml
index 9f1f29d4f6..b0a158e2e2 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-test/pom.xml b/pmd-test/pom.xml
index a971de8c9e..a86423dd21 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <dependencies>
diff --git a/pmd-ui/pom.xml b/pmd-ui/pom.xml
index 9982357db3..267f391102 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <properties>
diff --git a/pmd-visualforce/pom.xml b/pmd-visualforce/pom.xml
index 051d8d64b0..84555859eb 100644
--- a/pmd-visualforce/pom.xml
+++ b/pmd-visualforce/pom.xml
@@ -7,7 +7,7 @@
     <parent>
         <groupId>net.sourceforge.pmd</groupId>
         <artifactId>pmd</artifactId>
-        <version>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-vm/pom.xml b/pmd-vm/pom.xml
index 66b330bb81..3fb987fb6f 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pmd-xml/pom.xml b/pmd-xml/pom.xml
index 069cf822dc..8c45d64c04 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>6.4.0-SNAPSHOT</version>
+        <version>6.4.0</version>
     </parent>
 
     <build>
diff --git a/pom.xml b/pom.xml
index 5226258133..a83b36385c 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>6.4.0-SNAPSHOT</version>
+    <version>6.4.0</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>HEAD</tag>
+        <tag>pmd_releases/6.4.0</tag>
     </scm>
     <distributionManagement>
         <snapshotRepository>