diff --git build.gradle build.gradle
index 2435734..7ff670e 100644
--- build.gradle
+++ 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
   }
 
diff --git gradle.properties gradle.properties
index babd985..15f2f7f 100644
--- gradle.properties
+++ gradle.properties
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 group=org.apache.kafka
-version=0.8.1.1
+version=0.8.1.1-SNAPSHOT
 scalaVersion=2.8.0
 task=build