diff --git a/install/package.json b/install/package.json
index 8db10873dd..2ee7a2e127 100644
--- a/install/package.json
+++ b/install/package.json
@@ -121,7 +121,7 @@
         "passport-local": "1.0.0",
         "pg": "8.20.0",
         "pg-cursor": "2.19.0",
-        "postcss": "8.5.8",
+        "postcss": "8.5.9",
         "postcss-clean": "1.2.0",
         "pretty": "^2.0.0",
         "progress-webpack-plugin": "1.0.16",