diff --git a/agent/build.gradle b/agent/build.gradle
index 35193f8..000dc45 100644
--- a/agent/build.gradle
+++ b/agent/build.gradle
@@ -3,7 +3,7 @@ plugins {
     id "java"
     id "maven-publish"
     id "signing"
-    id "org.unbroken-dome.test-sets" version "4.1.0"
+    id "org.unbroken-dome.test-sets" version "4.0.0"
     id 'me.champeau.gradle.japicmp' version '0.4.2' apply false
     id 'de.undercouch.download' version '5.5.0' apply false    
 }