diff --git a/themes/chameleon/package.json b/themes/chameleon/package.json
index 2b7bd5d..4faec5a 100644
--- a/themes/chameleon/package.json
+++ b/themes/chameleon/package.json
@@ -6,7 +6,8 @@
     "build": "node build/script.js"
   },
   "devDependencies": {
-    "autoprefixer": "^9.6.1",
+    "autoprefixer": "^10.0.0",
+    "postcss": "^8.0.6",
     "postcss-normalize": "^9.0.0",
     "sanitize.css": "^12.0.0"
   },