Update package.json

package.json

@@ -20,10 +20,10 @@
   "devDependencies": {
     "grunt": "~0.4",
     "grunt-contrib-clean": "~0.4.0",
+    "grunt-contrib-cssmin": "~0.6.1",
     "grunt-contrib-jshint": "~0.1",
     "grunt-contrib-uglify": "~0.1",
-    "grunt-contrib-cssmin": "~0.6.1",
     "grunt-exec": "~0.4",
-    "semver": "~1.1.3"
+    "semver": "^4.0.3"
   }
-}
+}