diff --git a/build.gradle b/build.gradle
index 34774f7..96f292e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -19,7 +19,7 @@ dependencies {
 
     testCompile 'com.openpojo:openpojo:0.8.3'
     testCompile "org.codehaus.groovy:groovy-all:2.3.7"
-    testCompile "org.spockframework:spock-core:1.0-groovy-2.4"
+    testCompile "org.spockframework:spock-core:1.3-groovy-2.5"
     testRuntime 'org.slf4j:slf4j-simple:1.7.7'
 }