diff --git a/package.json b/package.json
index 6eb5e4cb..1af21f92 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "@arethetypeswrong/cli": "^0.18.2",
     "@eslint/json": "^1.2.0",
     "@types/node": "^20.19.0",
-    "@webref/css": "^8.5.5",
+    "@webref/css": "^8.5.6",
     "c8": "^11.0.0",
     "dedent": "^1.5.3",
     "eslint": "^10.0.0",