diff --git a/package.json b/package.json
index 568a751..e7d1eb7 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
 	},
 	"homepage": "https://github.com/retyui/clean-css-loader#readme",
 	"dependencies": {
-		"clean-css": "^4.1.4",
+		"clean-css": "^4.1.9",
 		"loader-utils": "^1.1.0"
 	},
 	"devDependencies": {