Release 4.0.0.

Change-Id: I284390568ef15662d52654663000c3f68f362bd5
diff --git a/runtime/pom.xml b/runtime/pom.xml
index beb4bcc..08520be 100644
--- a/runtime/pom.xml
+++ b/runtime/pom.xml
@@ -7,7 +7,7 @@
   <parent>
     <groupId>eu.mulk.quarkus-googlecloud-jsonlogging</groupId>
     <artifactId>quarkus-googlecloud-jsonlogging-parent</artifactId>
-    <version>3.1.4-SNAPSHOT</version>
+    <version>4.0.0</version>
   </parent>
 
   <artifactId>quarkus-googlecloud-jsonlogging</artifactId>