diff --git a/gradle.properties b/gradle.properties
index bc520ca95a..6112aca501 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,3 +1,3 @@
 gaeVersion=1.9.64
-springBootVersion=2.1.0.M3
+springBootVersion=2.1.0.M4
 version=5.1.1.BUILD-SNAPSHOT