diff --git a/package.json b/package.json
index d0a5d5c9..085f80c3 100644
--- a/package.json
+++ b/package.json
@@ -32,12 +32,12 @@
     "accepts": "1.1.4"
   },
   "devDependencies": {
-    "babel-preset-es2015": "^6.3.13",
+    "babel-preset-es2015": "6.3.13",
     "engine.io-client": "1.6.8",
     "expect.js": "0.2.0",
-    "gulp": "^3.9.0",
-    "gulp-babel": "^6.1.1",
-    "gulp-mocha": "^2.2.0",
+    "gulp": "3.9.0",
+    "gulp-babel": "6.1.1",
+    "gulp-mocha": "2.2.0",
     "mocha": "2.3.4",
     "s": "0.1.1",
     "superagent": "0.15.4"