diff --git a/buildconfigurations/pom.xml b/buildconfigurations/pom.xml
index d98b5ee..6267518 100644
--- a/buildconfigurations/pom.xml
+++ b/buildconfigurations/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-all</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>buildconfigurations</artifactId>
diff --git a/code/api/pom.xml b/code/api/pom.xml
index a901fc9..330bb56 100644
--- a/code/api/pom.xml
+++ b/code/api/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-code</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>tamaya-api</artifactId>
@@ -40,7 +40,7 @@
                 <artifactId>revapi-maven-plugin</artifactId>
                 <configuration>
                     <oldArtifacts>
-                        <artifact>${project.groupId}:${project.artifactId}:0.3-incubating</artifact>
+                        <artifact>${project.groupId}:${project.artifactId}:0.4-incubating</artifact>
                     </oldArtifacts>
                     <newArtifacts>
                         <artifact>${project.groupId}:${project.artifactId}:${project.version}</artifact>
diff --git a/code/core/pom.xml b/code/core/pom.xml
index c0222d0..0f651a2 100644
--- a/code/core/pom.xml
+++ b/code/core/pom.xml
@@ -22,7 +22,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-code</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>tamaya-core</artifactId>
@@ -79,7 +79,7 @@
                 <artifactId>revapi-maven-plugin</artifactId>
                 <configuration>
                     <oldArtifacts>
-                        <artifact>${project.groupId}:${project.artifactId}:0.3-incubating</artifact>
+                        <artifact>${project.groupId}:${project.artifactId}:0.4-incubating</artifact>
                     </oldArtifacts>
                     <newArtifacts>
                         <artifact>${project.groupId}:${project.artifactId}:${project.version}</artifact>
diff --git a/code/pom.xml b/code/pom.xml
index 17e6123..9b8ff1f 100644
--- a/code/pom.xml
+++ b/code/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-all</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>tamaya-code</artifactId>
diff --git a/code/spi-support/pom.xml b/code/spi-support/pom.xml
index b1e0fb2..1c94f5d 100644
--- a/code/spi-support/pom.xml
+++ b/code/spi-support/pom.xml
@@ -24,7 +24,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-code</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>tamaya-spisupport</artifactId>
@@ -40,7 +40,7 @@
                 <artifactId>revapi-maven-plugin</artifactId>
                 <configuration>
                     <oldArtifacts>
-                        <artifact>${project.groupId}:${project.artifactId}:0.3-incubating</artifact>
+                        <artifact>${project.groupId}:${project.artifactId}:0.4-incubating</artifact>
                     </oldArtifacts>
                     <newArtifacts>
                         <artifact>${project.groupId}:${project.artifactId}:${project.version}</artifact>
diff --git a/distribution/pom.xml b/distribution/pom.xml
index 60c3bb8..f62aef6 100644
--- a/distribution/pom.xml
+++ b/distribution/pom.xml
@@ -23,7 +23,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-all</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>tamaya-distribution</artifactId>
diff --git a/examples/01-minimal/pom.xml b/examples/01-minimal/pom.xml
index 867563a..8350bee 100644
--- a/examples/01-minimal/pom.xml
+++ b/examples/01-minimal/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.tamaya.examples</groupId>
         <artifactId>examples</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>01-minimal</artifactId>
diff --git a/examples/02-custom-property-source/pom.xml b/examples/02-custom-property-source/pom.xml
index 2a3da8f..9aa2171 100644
--- a/examples/02-custom-property-source/pom.xml
+++ b/examples/02-custom-property-source/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.tamaya.examples</groupId>
         <artifactId>examples</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
     <artifactId>02-custom-property-source</artifactId>
diff --git a/examples/pom.xml b/examples/pom.xml
index 3135ec7..fcc3edb 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.apache.tamaya</groupId>
         <artifactId>tamaya-all</artifactId>
-        <version>0.4-incubating</version>
+        <version>0.5-incubating-SNAPSHOT</version>
     </parent>
 
 
diff --git a/pom.xml b/pom.xml
index a955b02..00da6eb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,7 +22,7 @@
     </parent>
     <groupId>org.apache.tamaya</groupId>
     <artifactId>tamaya-all</artifactId>
-    <version>0.4-incubating</version>
+    <version>0.5-incubating-SNAPSHOT</version>
     <packaging>pom</packaging>
 
     <name>Apache Tamaya Base</name>
@@ -74,7 +74,7 @@
 
         <!-- Dependencies for site generation -->
         <reflow-skin.version>1.1.1</reflow-skin.version>
-        <released_version>0.3-incubating</released_version>
+        <released_version>0.4-incubating</released_version>
         <osgi.annotation.version>6.0.0</osgi.annotation.version>
         <!-- API checker -->
         <revapi-java.version>0.18.0</revapi-java.version>