diff --git a/package.json b/package.json
index 3d375f2..20ce17d 100644
--- a/package.json
+++ b/package.json
@@ -5,17 +5,17 @@
   "homepage": "https://github.com/Automattic/engine.io-parser",
   "devDependencies": {
     "expect.js": "0.3.1",
-    "mocha": "2.2.5",
-    "zuul": "3.7.3",
-    "zuul-ngrok": "3.2.0"
+    "mocha": "3.2.0",
+    "zuul": "3.11.1",
+    "zuul-ngrok": "4.0.0"
   },
   "dependencies": {
-    "after": "0.8.1",
+    "after": "0.8.2",
     "arraybuffer.slice": "0.0.6",
-    "base64-arraybuffer": "0.1.2",
+    "base64-arraybuffer": "0.1.5",
     "blob": "0.0.4",
-    "has-binary": "0.1.6",
-    "utf8": "2.1.0"
+    "has-binary": "0.1.7",
+    "utf8": "2.1.2"
   },
   "scripts": {
     "test": "make test"