diff --git a/package.json b/package.json
index beeb5744..d089f8fa 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "grunt-contrib-clean": "^1.0.0",
     "grunt-contrib-compress": "^1.3.0",
     "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-cssmin": "^1.0.2",
+    "grunt-contrib-cssmin": "^2.1.0",
     "grunt-contrib-uglify": "^2.0.0",
     "grunt-preprocess": "^5.1.0",
     "html-to-text": "^3.0.0",