diff --git a/nachrichten-manager-interface/pom.xml b/nachrichten-manager-interface/pom.xml
index b0b01449eb899172dc61d7bb2a7945fcbb1a955e..fd5a58a08370c02f0bbedf361b2ccea5bb07c402 100644
--- a/nachrichten-manager-interface/pom.xml
+++ b/nachrichten-manager-interface/pom.xml
@@ -38,7 +38,7 @@
 
 	<groupId>de.ozgcloud.nachrichten</groupId>
 	<artifactId>nachrichten-manager-interface</artifactId>
-	<version>2.20.0</version>
+	<version>2.21.0-SNAPSHOT</version>
 
 	<name>OZG-Cloud Nachrichten Manager gRPC Interface</name>
 	<description>Interface (gRPC) for Nachrichten Manager</description>
diff --git a/nachrichten-manager-postfach-interface/pom.xml b/nachrichten-manager-postfach-interface/pom.xml
index a9978ca966bd59462e0f3e19a246e809a5c68b14..cfe0724742916bdc8d3ea9fb1a599bd7e0d4bc33 100644
--- a/nachrichten-manager-postfach-interface/pom.xml
+++ b/nachrichten-manager-postfach-interface/pom.xml
@@ -31,7 +31,7 @@
     <parent>
         <groupId>de.ozgcloud.nachrichten</groupId>
         <artifactId>nachrichten-manager</artifactId>
-        <version>2.20.0</version>
+        <version>2.21.0-SNAPSHOT</version>
         <relativePath>../</relativePath>
     </parent>
 
diff --git a/nachrichten-manager-server/pom.xml b/nachrichten-manager-server/pom.xml
index f6e9cace765876f69f4b95a7ae475a43b01a0190..a8eead5d0ada427b75460fc20d074c2b32043632 100644
--- a/nachrichten-manager-server/pom.xml
+++ b/nachrichten-manager-server/pom.xml
@@ -32,7 +32,7 @@
 	<parent>
 		<groupId>de.ozgcloud.nachrichten</groupId>
 		<artifactId>nachrichten-manager</artifactId>
-		<version>2.20.0</version>
+		<version>2.21.0-SNAPSHOT</version>
 		<relativePath>../</relativePath>
 	</parent>
 
diff --git a/pom.xml b/pom.xml
index a0608cbf1720654251a1cf5046fd45cbddca08c1..5a903cd0caa03b7e2b9fbf75e513e20a490efe84 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,7 +37,7 @@
 
 	<groupId>de.ozgcloud.nachrichten</groupId>
 	<artifactId>nachrichten-manager</artifactId>
-	<version>2.20.0</version>
+	<version>2.21.0-SNAPSHOT</version>
 
 	<name>OZG-Cloud Nachrichten Manager</name>
 	<packaging>pom</packaging>