diff --git a/pom.xml b/pom.xml
index 8d297a52..becf9aa3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -107,7 +107,7 @@
 		<dependency>
 				<groupId>org.spockframework</groupId>
 				<artifactId>spock-core</artifactId>
-				<version>2.0-M5-groovy-3.0</version>
+				<version>2.2-M1-groovy-4.0</version>
 				<scope>test</scope>
 		</dependency>