diff --git a/src/package.json b/src/package.json
index 050c04f7..b6691559 100644
--- a/src/package.json
+++ b/src/package.json
@@ -44,7 +44,6 @@
     "languages4translatewiki": "0.1.3",
     "log4js": "0.6.35",
     "measured": "1.1.0",
-    "mocha": "5.0.5",
     "npm": ">=4.0.2",
     "request": "2.83.0",
     "resolve": "1.1.7",
@@ -63,6 +62,7 @@
     "etherpad-lite": "./node/server.js"
   },
   "devDependencies": {
+    "mocha": "5.0.5",
     "supertest": "3.0.0",
     "wd": "1.6.1"
   },