diff --git a/package.json b/package.json
index f299ff6..9acc28c 100644
--- a/package.json
+++ b/package.json
@@ -11,11 +11,11 @@
   "license": "UNLICENSED",
   "devDependencies": {
     "husky": "<2.0.0",
-    "grunt": "^0.4.5",
+    "grunt": "^1.0.1",
     "grunt-cli": "^1.0.0",
-    "grunt-contrib-clean": "^0.6.0",
+    "grunt-contrib-clean": "^1.1.0",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-cssmin": "^1.0.0",
+    "grunt-contrib-cssmin": "^2.1.0",
     "grunt-contrib-less": "^1.3.0",
     "grunt-contrib-uglify": "^2.0.0",
     "semantic-release": "^6.3.2",