diff --git a/packages/netlify-cms/package.json b/packages/netlify-cms/package.json
index 951d870..3056601 100644
--- a/packages/netlify-cms/package.json
+++ b/packages/netlify-cms/package.json
@@ -27,7 +27,7 @@
     "react-dom": "^16.13.1"
   },
   "devDependencies": {
-    "css-loader": "^4.0.0",
+    "css-loader": "^5.2.7",
     "style-loader": "^1.1.3",
     "webpack": "^4.42.1",
     "webpack-bundle-analyzer": "^3.6.1"