diff --git a/api-lib-core/pom.xml b/api-lib-core/pom.xml
index 74543e453048a06b63db0dab0524e888da616ffb..f467cbc1fa128e6bac520a9b32a27952a97f1554 100644
--- a/api-lib-core/pom.xml
+++ b/api-lib-core/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>de.ozgcloud.api-lib</groupId>
 		<artifactId>api-lib-parent</artifactId>
-		<version>0.20.0</version>
+		<version>0.21.0-SNAPSHOT</version>
 	</parent>
 
 	<artifactId>api-lib-core</artifactId>
diff --git a/api-lib-demo/pom.xml b/api-lib-demo/pom.xml
index f5b446e4d024420e317db0f07d82350dda2be734..34b18bb5fca73b3c128d06732568838a5a761b60 100644
--- a/api-lib-demo/pom.xml
+++ b/api-lib-demo/pom.xml
@@ -30,7 +30,7 @@
     <parent>
         <groupId>de.ozgcloud.api-lib</groupId>
         <artifactId>api-lib-parent</artifactId>
-        <version>0.20.0</version>
+        <version>0.21.0-SNAPSHOT</version>
     </parent>
     <artifactId>api-lib-demo</artifactId>
     <inceptionYear>2023</inceptionYear>
diff --git a/ozg-cloud-spring-boot-starter/pom.xml b/ozg-cloud-spring-boot-starter/pom.xml
index 136c30aecdc488b2bbddb249d169c037a91e9df4..ea181301c35a334678f6c9989e9cb735309433c0 100644
--- a/ozg-cloud-spring-boot-starter/pom.xml
+++ b/ozg-cloud-spring-boot-starter/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>de.ozgcloud.api-lib</groupId>
 		<artifactId>api-lib-parent</artifactId>
-		<version>0.20.0</version>
+		<version>0.21.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>ozg-cloud-spring-boot-starter</artifactId>
 	<inceptionYear>2023</inceptionYear>
diff --git a/pom.xml b/pom.xml
index a4aa4e85f181849fabd03b0a85252ee0c11cca1d..dcbd0f795c88e1ea6dd1a38a5a9635121cbb2dca 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
 
 	<groupId>de.ozgcloud.api-lib</groupId>
 	<artifactId>api-lib-parent</artifactId>
-	<version>0.20.0</version>
+	<version>0.21.0-SNAPSHOT</version>
 	<description>Library project to use the OZG-Cloud API</description>
 	<inceptionYear>2023</inceptionYear>