diff --git a/samples/rest-notes-grails/gradle.properties b/samples/rest-notes-grails/gradle.properties
index 7593b7f9..edafcff0 100644
--- a/samples/rest-notes-grails/gradle.properties
+++ b/samples/rest-notes-grails/gradle.properties
@@ -1 +1 @@
-grailsVersion=3.3.2
+grailsVersion=3.3.9