diff --git a/package-lock.json b/package-lock.json
index ae256f7c..cc12239d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -62,7 +62,7 @@
         "@types/webidl2": "^24.4.3",
         "@types/yargs": "^17.0.33",
         "@typescript-eslint/eslint-plugin": "7.18.0",
-        "@webref/css": "6.16.1",
+        "@webref/css": "6.17.0",
         "@webref/elements": "^2.4.0",
         "@webref/idl": "3.55.2",
         "c8": "10.1.2",
@@ -3834,9 +3834,9 @@
       "dev": true
     },
     "node_modules/@webref/css": {
-      "version": "6.16.1",
-      "resolved": "https://registry.npmjs.org/@webref/css/-/css-6.16.1.tgz",
-      "integrity": "sha512-35QpBnNHloWvNmHU4aHH36/40z7RhJf19dgeqr/O0jtbN0plg5xPmlE6MRxdSYItjb1ffh/AM4mA/hpud2E4Nw==",
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/@webref/css/-/css-6.17.0.tgz",
+      "integrity": "sha512-5flhd3Wuokf9gNKhFmJ+SlG4tb2+qCXXBB3jo0RG7i9LuigYaZxJd0FqyNsVtTqJwSEXHt9AshTjN82ESr5k6g==",
       "dev": true,
       "peerDependencies": {
         "css-tree": "^2.3.1"
diff --git a/package.json b/package.json
index ca396e8b..96067006 100644
--- a/package.json
+++ b/package.json
@@ -96,7 +96,7 @@
     "@types/webidl2": "^24.4.3",
     "@types/yargs": "^17.0.33",
     "@typescript-eslint/eslint-plugin": "7.18.0",
-    "@webref/css": "6.16.1",
+    "@webref/css": "6.17.0",
     "@webref/elements": "^2.4.0",
     "@webref/idl": "3.55.2",
     "c8": "10.1.2",