diff --git a/examples/open-library-api/src/main/js/package.json b/examples/open-library-api/src/main/js/package.json
index 08aecfe..b2eb644 100644
--- a/examples/open-library-api/src/main/js/package.json
+++ b/examples/open-library-api/src/main/js/package.json
@@ -31,7 +31,7 @@
     "file-loader": "5.1.0",
     "mini-css-extract-plugin": "0.9.0",
     "node-sass": "4.13.1",
-    "postcss": "7.0.27",
+    "postcss": "8.4.31",
     "postcss-import": "12.0.1",
     "postcss-loader": "3.0.0",
     "postcss-preset-env": "6.7.0",