diff --git a/test/fixtures/wpt/README.md b/test/fixtures/wpt/README.md
index 2ce7de20ded95f..3ada9280a5a49e 100644
--- a/test/fixtures/wpt/README.md
+++ b/test/fixtures/wpt/README.md
@@ -29,7 +29,7 @@ Last update:
 - resources: https://github.com/web-platform-tests/wpt/tree/1d2c5fb36a/resources
 - streams: https://github.com/web-platform-tests/wpt/tree/bc9dcbbf1a/streams
 - url: https://github.com/web-platform-tests/wpt/tree/efb889eb4c/url
-- urlpattern: https://github.com/web-platform-tests/wpt/tree/a2e15ad405/urlpattern
+- urlpattern: https://github.com/web-platform-tests/wpt/tree/a6335709a9/urlpattern
 - user-timing: https://github.com/web-platform-tests/wpt/tree/5ae85bf826/user-timing
 - wasm/jsapi: https://github.com/web-platform-tests/wpt/tree/cde25e7e3c/wasm/jsapi
 - wasm/webapi: https://github.com/web-platform-tests/wpt/tree/fd1b23eeaa/wasm/webapi
diff --git a/test/fixtures/wpt/urlpattern/resources/urlpatterntestdata.json b/test/fixtures/wpt/urlpattern/resources/urlpatterntestdata.json
index 783fc3bdcf66a5..ee1003899e068f 100644
--- a/test/fixtures/wpt/urlpattern/resources/urlpatterntestdata.json
+++ b/test/fixtures/wpt/urlpattern/resources/urlpatterntestdata.json
@@ -3118,5 +3118,13 @@
     "expected_match": {
       "hostname": { "input": "localhost", "groups": { "domain" : "localhost"} }
     }
+  },
+  {
+    "pattern": ["((?R)):"],
+    "expected_obj": "error"
+  },
+  {
+    "pattern": ["(\\H):"],
+    "expected_obj": "error"
   }
 ]
diff --git a/test/fixtures/wpt/versions.json b/test/fixtures/wpt/versions.json
index 50173e71b1b9d7..a92a680cc272f2 100644
--- a/test/fixtures/wpt/versions.json
+++ b/test/fixtures/wpt/versions.json
@@ -76,7 +76,7 @@
     "path": "url"
   },
   "urlpattern": {
-    "commit": "a2e15ad40518c30c4e7f649584dbda699a40d531",
+    "commit": "a6335709a9c0e50c565b7dabc066a69c0e97cbd6",
     "path": "urlpattern"
   },
   "user-timing": {