diff --git a/api/pom.xml b/api/pom.xml
index fd534dd..40f4f46 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -21,7 +21,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.rest.client</groupId>
         <artifactId>microprofile-rest-client-parent</artifactId>
-        <version>3.1-SNAPSHOT</version>
+        <version>4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>microprofile-rest-client-api</artifactId>
diff --git a/pom.xml b/pom.xml
index 90e7b75..a634987 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@
 
     <groupId>org.eclipse.microprofile.rest.client</groupId>
     <artifactId>microprofile-rest-client-parent</artifactId>
-    <version>3.1-SNAPSHOT</version>
+    <version>4.0-SNAPSHOT</version>
     <packaging>pom</packaging>
     <name>MicroProfile Rest Client</name>
     <description>Typesafe Rest Client APIs for MicroProfile</description>
diff --git a/spec/pom.xml b/spec/pom.xml
index 0ef3167..41b5b11 100644
--- a/spec/pom.xml
+++ b/spec/pom.xml
@@ -20,12 +20,12 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.rest.client</groupId>
         <artifactId>microprofile-rest-client-parent</artifactId>
-        <version>3.1-SNAPSHOT</version>
+        <version>4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>microprofile-rest-client-spec</artifactId>
     <packaging>pom</packaging>
     <name>MicroProfile Rest Client Specification</name>
     <description>Typesafe Rest Client APIs for MicroProfile :: Specification</description>
-    
-</project>
\ No newline at end of file
+
+</project>
diff --git a/tck/pom.xml b/tck/pom.xml
index 43f92cf..a8e056a 100644
--- a/tck/pom.xml
+++ b/tck/pom.xml
@@ -21,7 +21,7 @@
         <!-- This is just for now and will not work if the API has a separate release cycle than the rest. -->
         <groupId>org.eclipse.microprofile.rest.client</groupId>
         <artifactId>microprofile-rest-client-parent</artifactId>
-        <version>3.1-SNAPSHOT</version>
+        <version>4.0-SNAPSHOT</version>
     </parent>
 
     <artifactId>microprofile-rest-client-tck</artifactId>