diff --git a/enforcer-api/pom.xml b/enforcer-api/pom.xml
index 8e2f90e..c27ddd6 100644
--- a/enforcer-api/pom.xml
+++ b/enforcer-api/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.maven.enforcer</groupId>
     <artifactId>enforcer</artifactId>
-    <version>3.0.0-M3</version>
+    <version>3.0.0-M4-SNAPSHOT</version>
   </parent>
 
   <artifactId>enforcer-api</artifactId>
diff --git a/enforcer-rules/pom.xml b/enforcer-rules/pom.xml
index 187d38b..03077da 100644
--- a/enforcer-rules/pom.xml
+++ b/enforcer-rules/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.maven.enforcer</groupId>
     <artifactId>enforcer</artifactId>
-    <version>3.0.0-M3</version>
+    <version>3.0.0-M4-SNAPSHOT</version>
   </parent>
 
   <artifactId>enforcer-rules</artifactId>
diff --git a/maven-enforcer-plugin/pom.xml b/maven-enforcer-plugin/pom.xml
index b8320bc..f2f6c34 100644
--- a/maven-enforcer-plugin/pom.xml
+++ b/maven-enforcer-plugin/pom.xml
@@ -24,7 +24,7 @@
   <parent>
     <groupId>org.apache.maven.enforcer</groupId>
     <artifactId>enforcer</artifactId>
-    <version>3.0.0-M3</version>
+    <version>3.0.0-M4-SNAPSHOT</version>
   </parent>
 
   <groupId>org.apache.maven.plugins</groupId>
diff --git a/pom.xml b/pom.xml
index 83306f1..f6c9ea8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,7 +28,7 @@
   </parent>
   <groupId>org.apache.maven.enforcer</groupId>
   <artifactId>enforcer</artifactId>
-  <version>3.0.0-M3</version>
+  <version>3.0.0-M4-SNAPSHOT</version>
   <packaging>pom</packaging>
 
   <name>Apache Maven Enforcer</name>
@@ -46,7 +46,7 @@
     <connection>scm:git:https://gitbox.apache.org/repos/asf/maven-enforcer.git</connection>
     <developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-enforcer.git</developerConnection>
     <url>https://github.com/apache/maven-enforcer/tree/${project.scm.tag}</url>
-    <tag>enforcer-3.0.0-M3</tag>
+    <tag>HEAD</tag>
   </scm>
   <issueManagement>
     <system>jira</system>