diff --git a/package.json b/package.json
index 0bc4f2a..439c77d 100644
--- a/package.json
+++ b/package.json
@@ -17,7 +17,7 @@
     "url": "https://github.com/textpattern/textpattern-jquery-ui-theme/issues"
   },
   "devDependencies": {
-    "autoprefixer": "10.5.2",
+    "autoprefixer": "10.5.4",
     "clean-webpack-plugin": "4.0.0",
     "cross-env": "10.1.0",
     "css-loader": "7.1.4",