diff --git a/samples/rest-notes-grails/build.gradle b/samples/rest-notes-grails/build.gradle
index 01f6a883..d536acc2 100644
--- a/samples/rest-notes-grails/build.gradle
+++ b/samples/rest-notes-grails/build.gradle
@@ -1,5 +1,6 @@
 buildscript {
 	repositories {
+		mavenCentral()
 		maven { url "https://repo.grails.org/grails/core" }
 	}
 	dependencies {