diff --git a/package.json b/package.json
index 2732dca..1feab8f 100644
--- a/package.json
+++ b/package.json
@@ -16,9 +16,9 @@
         "grunt-contrib-connect": "1.0.x",
         "grunt-contrib-copy": "1.0.x",
         "grunt-contrib-csslint": "~2.0.0",
-        "grunt-contrib-cssmin": "~2.0.0",
+        "grunt-contrib-cssmin": "~2.2.0",
         "grunt-eslint": "19.0.x",
-        "grunt-contrib-uglify": "~2.3.0",
+        "grunt-contrib-uglify": "~3.0.0",
         "grunt-contrib-watch": "1.0.x",
         "grunt-newer": "~1.3.0",
         "grunt-open": "0.2.x",