diff --git a/build.gradle b/build.gradle
index 2435734..7ff670e 100644
--- a/build.gradle
+++ b/build.gradle
@@ -263,7 +263,7 @@ project(':core') {
   }
 
   task testJar(type: Jar) {
-    appendix = 'test'
+    classifier = 'test'
     from sourceSets.test.output
   }
 
@@ -274,6 +274,9 @@ project(':core') {
     }
   }
 
+  artifacts {
+    archives testJar
+  }
 }
 
 project(':perf') {
@@ -358,7 +361,7 @@ project(':clients') {
   }
 
   task testJar(type: Jar) {
-    appendix = 'test'
+    classifier = 'test'
     from sourceSets.test.output
   }