diff --git a/api/pom.xml b/api/pom.xml
index fd534dd..d52aa70 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-RC1</version>
     </parent>
 
     <artifactId>microprofile-rest-client-api</artifactId>
diff --git a/pom.xml b/pom.xml
index db60d3a..28d2e36 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-RC1</version>
     <packaging>pom</packaging>
     <name>MicroProfile Rest Client</name>
     <description>Typesafe Rest Client APIs for MicroProfile</description>
@@ -74,7 +74,7 @@
         <connection>scm:git:https://github.com/eclipse/microprofile-rest-client.git</connection>
         <developerConnection>scm:git:git@github.com:eclipse/microprofile-rest-client.git</developerConnection>
         <url>https://github.com/eclipse/microprofile-rest-client</url>
-        <tag>HEAD</tag>
+        <tag>4.0-RC1</tag>
     </scm>
 
 
diff --git a/spec/pom.xml b/spec/pom.xml
index 0ef3167..fd885ea 100644
--- a/spec/pom.xml
+++ b/spec/pom.xml
@@ -20,7 +20,7 @@
         <!-- 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-RC1</version>
     </parent>
 
     <artifactId>microprofile-rest-client-spec</artifactId>
diff --git a/tck/pom.xml b/tck/pom.xml
index 43f92cf..8f23296 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-RC1</version>
     </parent>
 
     <artifactId>microprofile-rest-client-tck</artifactId>