diff --git a/api/pom.xml b/api/pom.xml
index 279e3a16..280abe10 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>process-engine-api</artifactId>
diff --git a/bom/pom.xml b/bom/pom.xml
index 2461534a..5e5c9bac 100644
--- a/bom/pom.xml
+++ b/bom/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
   </parent>
 
   <artifactId>process-engine-api-bom</artifactId>
diff --git a/engine-adapter/adapter-commons-spring-boot-starter/pom.xml b/engine-adapter/adapter-commons-spring-boot-starter/pom.xml
index cec2ff6a..ad3c93d7 100644
--- a/engine-adapter/adapter-commons-spring-boot-starter/pom.xml
+++ b/engine-adapter/adapter-commons-spring-boot-starter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/adapter-commons/pom.xml b/engine-adapter/adapter-commons/pom.xml
index bdab4442..ddafe34d 100644
--- a/engine-adapter/adapter-commons/pom.xml
+++ b/engine-adapter/adapter-commons/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/adapter-testing/pom.xml b/engine-adapter/adapter-testing/pom.xml
index 585ae7f5..a2fad8c1 100644
--- a/engine-adapter/adapter-testing/pom.xml
+++ b/engine-adapter/adapter-testing/pom.xml
@@ -6,7 +6,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/camunda-platform-7-embedded-core/pom.xml b/engine-adapter/camunda-platform-7-embedded-core/pom.xml
index 6364bd88..87bc1bfd 100644
--- a/engine-adapter/camunda-platform-7-embedded-core/pom.xml
+++ b/engine-adapter/camunda-platform-7-embedded-core/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/camunda-platform-7-embedded-spring-boot-starter/pom.xml b/engine-adapter/camunda-platform-7-embedded-spring-boot-starter/pom.xml
index 050d9a2b..750e836c 100644
--- a/engine-adapter/camunda-platform-7-embedded-spring-boot-starter/pom.xml
+++ b/engine-adapter/camunda-platform-7-embedded-spring-boot-starter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/camunda-platform-7-remote-core/pom.xml b/engine-adapter/camunda-platform-7-remote-core/pom.xml
index 7e57a9a6..273961e1 100644
--- a/engine-adapter/camunda-platform-7-remote-core/pom.xml
+++ b/engine-adapter/camunda-platform-7-remote-core/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/camunda-platform-7-remote-spring-boot-starter/pom.xml b/engine-adapter/camunda-platform-7-remote-spring-boot-starter/pom.xml
index 5e3752c2..241f641b 100644
--- a/engine-adapter/camunda-platform-7-remote-spring-boot-starter/pom.xml
+++ b/engine-adapter/camunda-platform-7-remote-spring-boot-starter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/camunda-platform-8-core/pom.xml b/engine-adapter/camunda-platform-8-core/pom.xml
index a8d9e6ac..3e87e0ff 100644
--- a/engine-adapter/camunda-platform-8-core/pom.xml
+++ b/engine-adapter/camunda-platform-8-core/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/engine-adapter/camunda-platform-8-spring-boot-starter/pom.xml b/engine-adapter/camunda-platform-8-spring-boot-starter/pom.xml
index a6bfd55e..2ffaab3a 100644
--- a/engine-adapter/camunda-platform-8-spring-boot-starter/pom.xml
+++ b/engine-adapter/camunda-platform-8-spring-boot-starter/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/java-c7-remote/pom.xml b/examples/java-c7-remote/pom.xml
index 225af04d..eb128649 100644
--- a/examples/java-c7-remote/pom.xml
+++ b/examples/java-c7-remote/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-examples</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/java-c7/pom.xml b/examples/java-c7/pom.xml
index 5d15389e..dbc05b33 100644
--- a/examples/java-c7/pom.xml
+++ b/examples/java-c7/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-examples</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/java-c8/pom.xml b/examples/java-c8/pom.xml
index d4402d52..ab2126af 100644
--- a/examples/java-c8/pom.xml
+++ b/examples/java-c8/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-examples</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/java-common-fixture/pom.xml b/examples/java-common-fixture/pom.xml
index 48603ac8..6b08ca6c 100644
--- a/examples/java-common-fixture/pom.xml
+++ b/examples/java-common-fixture/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-examples</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/examples/pom.xml b/examples/pom.xml
index 4dbfdde1..c02eb556 100644
--- a/examples/pom.xml
+++ b/examples/pom.xml
@@ -5,7 +5,7 @@
   <parent>
     <groupId>dev.bpm-crafters.process-engine-api</groupId>
     <artifactId>process-engine-api-root</artifactId>
-    <version>0.3.1-SNAPSHOT</version>
+    <version>0.4.0-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
diff --git a/pom.xml b/pom.xml
index 303d2345..7eb94f16 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,7 +11,7 @@
 
   <groupId>dev.bpm-crafters.process-engine-api</groupId>
   <artifactId>process-engine-api-root</artifactId>
-  <version>0.3.1-SNAPSHOT</version>
+  <version>0.4.0-SNAPSHOT</version>
   <name>POM: Project root</name>
   <description>Process Engine API</description>
   <url>https://github.com/bpm-crafters/process-engine-api/</url>