diff --git a/api-lib-core/pom.xml b/api-lib-core/pom.xml
index 1c344d6ee772a30b17514f49b4b7e898270c7ee7..d9dac238a6067872fccc2b71d94741275ca7e7be 100644
--- a/api-lib-core/pom.xml
+++ b/api-lib-core/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>de.ozgcloud.api-lib</groupId>
 		<artifactId>api-lib-parent</artifactId>
-		<version>0.3.0</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>api-lib-core</artifactId>
diff --git a/api-lib-demo/pom.xml b/api-lib-demo/pom.xml
index bbdd464d78f3400cb4c3fd015161e4a23bdd77fe..7f85ded1685e932cfdd4120044f636581b8da130 100644
--- a/api-lib-demo/pom.xml
+++ b/api-lib-demo/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>de.ozgcloud.api-lib</groupId>
 		<artifactId>api-lib-parent</artifactId>
-		<version>0.3.0</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>api-lib-demo</artifactId>
 
diff --git a/ozg-cloud-spring-boot-starter/pom.xml b/ozg-cloud-spring-boot-starter/pom.xml
index 4eb7c0df99bd27cb309dff01c0fb075769861190..63f160a2321fa22a77869e62925778acca89d7ee 100644
--- a/ozg-cloud-spring-boot-starter/pom.xml
+++ b/ozg-cloud-spring-boot-starter/pom.xml
@@ -5,7 +5,7 @@
 	<parent>
 		<groupId>de.ozgcloud.api-lib</groupId>
 		<artifactId>api-lib-parent</artifactId>
-		<version>0.3.0</version>
+		<version>0.4.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>ozg-cloud-spring-boot-starter</artifactId>
 
diff --git a/pom.xml b/pom.xml
index 002bd2b4ca2d14d6d12c6693d0cbc4e44802e3a6..5eb6fa5c1e201eb151d780c17d7364ad86a9d399 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
 
 	<groupId>de.ozgcloud.api-lib</groupId>
 	<artifactId>api-lib-parent</artifactId>
-	<version>0.3.0</version>
+	<version>0.4.0-SNAPSHOT</version>
 	<description>Library project to use the OZG-Cloud API</description>
 
 	<packaging>pom</packaging>