diff --git a/package.json b/package.json
index 236a865..eedc23a 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
   },
   "devDependencies": {
     "browserify": "^9.0.3",
-    "mocha": "*"
+    "mocha": "^3.0.0"
   },
   "keywords": [
     "glob",