diff --git a/packages/gap-web-ui/package.json b/packages/gap-web-ui/package.json
index 30cfc8b85..42a1b30fc 100644
--- a/packages/gap-web-ui/package.json
+++ b/packages/gap-web-ui/package.json
@@ -56,7 +56,7 @@
     "govuk-frontend": "^4.2.0",
     "jest": "^28.1.2",
     "jest-environment-jsdom": "^28.1.2",
-    "postcss": "8.4.14",
+    "postcss": "8.4.31",
     "prettier": "^2.7.1",
     "react": "^18.2.0",
     "react-dom": "^18.2.0",
diff --git a/yarn.lock b/yarn.lock
index 324579b13..15590fa98 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -10051,7 +10051,7 @@ __metadata:
     govuk-frontend: ^4.2.0
     jest: ^28.1.2
     jest-environment-jsdom: ^28.1.2
-    postcss: 8.4.14
+    postcss: 8.4.31
     prettier: ^2.7.1
     react: ^18.2.0
     react-dom: ^18.2.0