diff --git a/package.json b/package.json
index 395c60d..b7d061c 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   },
   "devDependencies": {
     "eslint": "4.15.0",
-    "mocha": "^5.0.0",
+    "mocha": "5.0.0",
     "safe-buffer": "5.1.1",
     "should": "13.2.1",
     "simple-odata-server": "1.0.0",