diff --git a/package.json b/package.json
index 1fe3f7ed..b90b00c2 100644
--- a/package.json
+++ b/package.json
@@ -7,31 +7,31 @@
   "dependencies": {},
   "devDependencies": {
     "base64-loader": "^1.0.0",
-    "cssnano": "^2.6.1",
+    "cssnano": "^3.3.2",
     "ejs-loader": "^0.2.1",
     "electron-builder": "^2.1.1",
     "exports-loader": "^0.6.2",
     "grunt": "^0.4.5",
     "grunt-bower-install-simple": "^1.1.4",
-    "grunt-contrib-clean": "^0.6.0",
+    "grunt-contrib-clean": "^0.7.0",
     "grunt-contrib-compress": "^0.14.0",
-    "grunt-contrib-copy": "^0.8.1",
-    "grunt-contrib-htmlmin": "^0.4.0",
+    "grunt-contrib-copy": "^0.8.2",
+    "grunt-contrib-htmlmin": "^0.6.0",
     "grunt-contrib-jshint": "^0.11.2",
-    "grunt-contrib-uglify": "^0.9.1",
+    "grunt-contrib-uglify": "^0.10.1",
     "grunt-contrib-watch": "^0.6.1",
     "grunt-electron": "^2.0.1",
     "grunt-gitinfo": "^0.1.7",
     "grunt-inline-alt": "^0.3.10",
-    "grunt-postcss": "^0.6.0",
-    "grunt-sass": "^1.0.0",
+    "grunt-postcss": "^0.7.1",
+    "grunt-sass": "^1.1.0",
     "grunt-string-replace": "^1.2.0",
     "grunt-webpack": "^1.0.11",
     "load-grunt-tasks": "^3.2.0",
     "string-replace-webpack-plugin": "0.0.2",
     "time-grunt": "^1.2.1",
-    "uglify-loader": "^1.2.0",
-    "webpack": "^1.11.0",
+    "uglify-loader": "^1.3.0",
+    "webpack": "^1.12.6",
     "webpack-dev-server": "^1.12.1"
   },
   "scripts": {