diff --git a/package.json b/package.json
index 4c37a2a..5428ff6 100644
--- a/package.json
+++ b/package.json
@@ -7,18 +7,18 @@
     "test": "grunt test"
   },
   "devDependencies": {
-    "bower": "~1.2.5",
-    "grunt": "~0.4.1",
-    "grunt-cli": "~0.1.9",
-    "grunt-contrib-cssmin": "~0.6.0",
-    "grunt-contrib-clean": "~0.5.0",
-    "grunt-contrib-copy": "~0.5.0",
-    "grunt-contrib-concat": "~0.3.0",
-    "grunt-contrib-compress": "~0.6.0",
-    "grunt-contrib-csslint": "~0.2.0",
-    "grunt-contrib-watch": "~0.5.3",
-    "grunt-css-selectors": "~1.0.0",
-    "grunt-pure-grids": "0.0.1",
-    "grunt-stripmq": "0.0.3"
+    "bower": "^1.3.7",
+    "grunt": "^0.4.5",
+    "grunt-cli": "^0.1.13",
+    "grunt-contrib-clean": "^0.5.0",
+    "grunt-contrib-compress": "^0.9.1",
+    "grunt-contrib-concat": "^0.4.0",
+    "grunt-contrib-copy": "^0.5.0",
+    "grunt-contrib-csslint": "^0.2.0",
+    "grunt-contrib-cssmin": "^0.6.2",
+    "grunt-contrib-watch": "^0.6.1",
+    "grunt-css-selectors": "^1.1.0",
+    "grunt-pure-grids": "^1.0.0",
+    "grunt-stripmq": "0.0.6"
   }
 }