diff --git a/csharp/web-ui/reactexample/package.json b/csharp/web-ui/reactexample/package.json
index 0ef03f066..8567aeb56 100644
--- a/csharp/web-ui/reactexample/package.json
+++ b/csharp/web-ui/reactexample/package.json
@@ -58,7 +58,7 @@
     "eslint": "9.24.0",
     "eslint-plugin-react-hooks": "5.2.0",
     "eslint-plugin-react-refresh": "0.4.19",
-    "postcss": "8.5.3",
+    "postcss": "8.5.10",
     "tailwindcss": "3.4.14",
     "ts-node": "10.9.2",
     "typescript": "5.6.3",