diff --git a/spring-integration-mqtt/gradle.properties b/spring-integration-mqtt/gradle.properties
index 2db7ae7..60c570c 100644
--- a/spring-integration-mqtt/gradle.properties
+++ b/spring-integration-mqtt/gradle.properties
@@ -1 +1 @@
-version=4.0.0.BUILD-SNAPSHOT
+version=4.0.0.M1