diff --git a/package.json b/package.json
index 12dda3b..135877b 100644
--- a/package.json
+++ b/package.json
@@ -14,6 +14,7 @@
     "@testing-library/user-event": "^7.1.2",
     "bootstrap": "^4.6.2",
     "leaflet": "^1.6.0",
+    "postcss": "^8.4.33",
     "react": "^16.14.0",
     "react-cookie-consent": "^5.1.3",
     "react-dom": "^16.14.0",