diff --git a/package.json b/package.json
index a8ae342051..1bfc7f2b55 100644
--- a/package.json
+++ b/package.json
@@ -40,18 +40,18 @@
   "devDependencies": {
     "benchmark": "~1.0.0",
     "browserify": "~3.20.0",
-    "coverify": "~0.1.1",
+    "coverify": "~1.0.4",
     "envify": "~1.0.1",
-    "es5-shim": "~2.1.0",
+    "es5-shim": "~2.3.0",
     "grunt": "~0.4.1",
     "grunt-cli": "~0.1.9",
     "grunt-compare-size": "~0.4.0",
     "grunt-complexity": "~0.1.3",
     "grunt-contrib-clean": "~0.5.0",
-    "grunt-contrib-compress": "~0.5.1",
-    "grunt-contrib-connect": "~0.5.0",
-    "grunt-contrib-copy": "~0.4.1",
-    "grunt-contrib-jshint": "~0.7.2",
+    "grunt-contrib-compress": "~0.6.0",
+    "grunt-contrib-connect": "~0.6.0",
+    "grunt-contrib-copy": "~0.5.0",
+    "grunt-contrib-jshint": "~0.8.0",
     "gzip-js": "~0.3.2",
     "jasmine-tapreporter": "~0.2.2",
     "microtime": "~0.5.1",
@@ -64,7 +64,7 @@
     "semver": "~2.2.1",
     "tmp": "~0.0.18",
     "uglify-js": "~2.4.0",
-    "uglifyify": "~1.0.1",
+    "uglifyify": "~1.1.0",
     "wd": "~0.2.6"
   },
   "engines": {