diff --git a/package.json b/package.json
index 27337a1f7c..560fb1e6d1 100644
--- a/package.json
+++ b/package.json
@@ -13,14 +13,14 @@
     "grunt-autoprefixer": "~2.2.0",
     "grunt-browserify": "^3.3.0",
     "grunt-contrib-clean": "~0.6.0",
-    "grunt-contrib-compress": "~0.12.0",
-    "grunt-contrib-concat": "~0.5.0",
-    "grunt-contrib-copy": "~0.7.0",
+    "grunt-contrib-compress": "~0.13.0",
+    "grunt-contrib-concat": "~0.5.1",
+    "grunt-contrib-copy": "~0.8.0",
     "grunt-contrib-cssmin": "~0.10.0",
-    "grunt-contrib-imagemin": "~0.9.1",
+    "grunt-contrib-imagemin": "~0.9.3",
     "grunt-contrib-jshint": "~0.11.0",
     "grunt-contrib-qunit": "~0.5.2",
-    "grunt-contrib-uglify": "~0.6.0",
+    "grunt-contrib-uglify": "~0.8.0",
     "grunt-contrib-watch": "~0.6.1",
     "grunt-jsvalidate": "~0.2.2",
     "grunt-legacy-util": "^0.2.0",