diff --git a/package.json b/package.json
index b0504c36..d1957a23 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "karma-ng-scenario": "~0.1.0",
     "karma-phantomjs-launcher": "^0.1.4",
     "karma-requirejs": "~0.2.2",
-    "karma-webpack": "^1.5.1",
+    "karma-webpack": "~1.5.1",
     "lodash": "^3.8.0",
     "mocha": "^2.1.0",
     "mocha-traceur": "^2.1.0",