diff --git a/gradle.properties b/gradle.properties
index 4997147e..30e39bad 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,4 +1,4 @@
-projectVersion=4.0.0-SNAPSHOT
+projectVersion=4.0.0-M9
 projectGroup=io.micronaut.xml
 
 title=Micronaut Jackson XML