diff --git a/package-lock.json b/package-lock.json
index 5ed7b9cb..f41d3901 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -63,7 +63,7 @@
         "@types/superagent": "^8.1.9",
         "@types/webidl2": "^24.4.3",
         "@types/yargs": "^17.0.33",
-        "@webref/css": "7.1.4",
+        "@webref/css": "8.0.0",
         "@webref/elements": "^2.5.1",
         "@webref/idl": "3.68.3",
         "c8": "10.1.3",
@@ -5533,9 +5533,9 @@
       }
     },
     "node_modules/@webref/css": {
-      "version": "7.1.4",
-      "resolved": "https://registry.npmjs.org/@webref/css/-/css-7.1.4.tgz",
-      "integrity": "sha512-xYgT56aHXL0XW23Xbygrx/KDsRQ2bSUuknojstYsD7scvGCGZZ3JBs0Np0xQHphgsGbgubtlAvd4U++aT0KeSg==",
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/@webref/css/-/css-8.0.0.tgz",
+      "integrity": "sha512-1uQbu0veKzLNyT5xUmbNj9mjpXi/hcMSBmutrUEcX45sDQlcc3/f7CUPPxu0nKZbVJy2fB5/ZlZMNiH3rwPlyQ==",
       "dev": true,
       "license": "MIT",
       "peerDependencies": {
diff --git a/package.json b/package.json
index 03e8282d..f7b12d77 100644
--- a/package.json
+++ b/package.json
@@ -97,7 +97,7 @@
     "@types/superagent": "^8.1.9",
     "@types/webidl2": "^24.4.3",
     "@types/yargs": "^17.0.33",
-    "@webref/css": "7.1.4",
+    "@webref/css": "8.0.0",
     "@webref/elements": "^2.5.1",
     "@webref/idl": "3.68.3",
     "c8": "10.1.3",