diff --git a/test/fixtures/wpt/README.md b/test/fixtures/wpt/README.md
index 68eebc09e7b1ab..86d83e913e6ed4 100644
--- a/test/fixtures/wpt/README.md
+++ b/test/fixtures/wpt/README.md
@@ -28,7 +28,7 @@ Last update:
 - resource-timing: https://github.com/web-platform-tests/wpt/tree/22d38586d0/resource-timing
 - resources: https://github.com/web-platform-tests/wpt/tree/1e140d63ec/resources
 - streams: https://github.com/web-platform-tests/wpt/tree/2bd26e124c/streams
-- url: https://github.com/web-platform-tests/wpt/tree/6a39784534/url
+- url: https://github.com/web-platform-tests/wpt/tree/67880a4eb8/url
 - 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/url/META.yml b/test/fixtures/wpt/url/META.yml
index 094b266b64b61b..415bd0f094c6b9 100644
--- a/test/fixtures/wpt/url/META.yml
+++ b/test/fixtures/wpt/url/META.yml
@@ -3,5 +3,4 @@ suggested_reviewers:
   - mikewest
   - domenic
   - annevk
-  - GPHemsley
   - TimothyGu
diff --git a/test/fixtures/wpt/url/README.md b/test/fixtures/wpt/url/README.md
index fa5e3b0dc72385..50227bc4b330ef 100644
--- a/test/fixtures/wpt/url/README.md
+++ b/test/fixtures/wpt/url/README.md
@@ -1,11 +1,13 @@
-## urltestdata.json
+## urltestdata.json / urltestdata-javascript-only.json
 
-`resources/urltestdata.json` contains URL parsing tests suitable for any URL parser implementation.
+[`resources/urltestdata.json`](resources/urltestdata.json) contains URL parsing tests suitable for any URL parser implementation.
+[`resources/urltestdata-javascript-only.json`](resources/urltestdata-javascript-only.json) contains URL parsing tests specifically meant
+for JavaScript's `URL()` class as well as other languages accepting non-scalar-value strings.
 
-It's used as a source of tests by `a-element.html`, `failure.html`, `url-constructor.any.js`, and
-other test files in this directory.
+These files are used as a source of tests by `a-element.html`, `failure.html`, `url-constructor.any.js`,
+and other test files in this directory.
 
-The format of `resources/urltestdata.json` is a JSON array of comments as strings and test cases as
+Both files share the same format. They consist of a JSON array of comments as strings and test cases as
 objects. The keys for each test case are:
 
 * `input`: a string to be parsed as URL.
diff --git a/test/fixtures/wpt/url/a-element-origin-xhtml.xhtml b/test/fixtures/wpt/url/a-element-origin-xhtml.xhtml
index effcf04bee3fb0..e68e68dda2ad6c 100644
--- a/test/fixtures/wpt/url/a-element-origin-xhtml.xhtml
+++ b/test/fixtures/wpt/url/a-element-origin-xhtml.xhtml
@@ -12,4 +12,8 @@
     <script src="resources/a-element-origin.js"></script>
   </body>
 </html>
-<!-- Other dependencies: resources/urltestdata.json -->
+<!--
+  Other dependencies:
+  * resources/urltestdata.json,
+  * resources/urltestdata-javascript-only.json,
+-->
diff --git a/test/fixtures/wpt/url/a-element-origin.html b/test/fixtures/wpt/url/a-element-origin.html
index 9cc8e94cbed060..7015f853f01a1d 100644
--- a/test/fixtures/wpt/url/a-element-origin.html
+++ b/test/fixtures/wpt/url/a-element-origin.html
@@ -5,4 +5,8 @@
 <base id=base>
 <div id=log></div>
 <script src=resources/a-element-origin.js></script>
-<!-- Other dependencies: resources/urltestdata.json -->
+<!--
+  Other dependencies:
+  * resources/urltestdata.json,
+  * resources/urltestdata-javascript-only.json,
+-->
diff --git a/test/fixtures/wpt/url/a-element-xhtml.xhtml b/test/fixtures/wpt/url/a-element-xhtml.xhtml
index 05bec4ce4b2f1e..610481a7819d62 100644
--- a/test/fixtures/wpt/url/a-element-xhtml.xhtml
+++ b/test/fixtures/wpt/url/a-element-xhtml.xhtml
@@ -17,4 +17,8 @@
     <script src="resources/a-element.js"></script>
   </body>
 </html>
-<!-- Other dependencies: resources/urltestdata.json -->
+<!--
+  Other dependencies:
+  * resources/urltestdata.json,
+  * resources/urltestdata-javascript-only.json,
+-->
diff --git a/test/fixtures/wpt/url/a-element.html b/test/fixtures/wpt/url/a-element.html
index 3428fa00574c4d..a7621d2ded76c4 100644
--- a/test/fixtures/wpt/url/a-element.html
+++ b/test/fixtures/wpt/url/a-element.html
@@ -10,7 +10,11 @@
 <base id=base>
 <div id=log></div>
 <script src=resources/a-element.js></script>
-<!-- Other dependencies: resources/urltestdata.json -->
+<!--
+  Other dependencies:
+  * resources/urltestdata.json,
+  * resources/urltestdata-javascript-only.json,
+-->
 
 
 <a id="multline-entity" download="multline-entity.txt" href="data:text/plain;charset=utf-8,first%20line&#10;second%20line"> Link with embedded \n is parsed correctly </a>
diff --git a/test/fixtures/wpt/url/failure.html b/test/fixtures/wpt/url/failure.html
index e61f462f97456f..d95b1d52d67237 100644
--- a/test/fixtures/wpt/url/failure.html
+++ b/test/fixtures/wpt/url/failure.html
@@ -6,7 +6,10 @@
 <script src=/resources/testharnessreport.js></script>
 <div id=log></div>
 <script>
-promise_test(() => fetch("resources/urltestdata.json").then(res => res.json()).then(runTests), "Loading data…")
+promise_test(() => Promise.all([
+  fetch("resources/urltestdata.json").then(res => res.json()),
+  fetch("resources/urltestdata-javascript-only.json").then(res => res.json()),
+]).then((tests) => tests.flat()).then(runTests), "Loading data…");
 
 function runTests(testData) {
   for (const test of testData) {
diff --git a/test/fixtures/wpt/url/idlharness-shadowrealm.window.js b/test/fixtures/wpt/url/idlharness-shadowrealm.window.js
deleted file mode 100644
index 2373f84e0e251a..00000000000000
--- a/test/fixtures/wpt/url/idlharness-shadowrealm.window.js
+++ /dev/null
@@ -1,2 +0,0 @@
-// META: script=/resources/idlharness-shadowrealm.js
-idl_test_shadowrealm(["url"], []);
diff --git a/test/fixtures/wpt/url/idlharness.any.js b/test/fixtures/wpt/url/idlharness.any.js
index 4a0e52f12b3c32..c0642729c0bec8 100644
--- a/test/fixtures/wpt/url/idlharness.any.js
+++ b/test/fixtures/wpt/url/idlharness.any.js
@@ -1,5 +1,6 @@
 // META: script=/resources/WebIDLParser.js
 // META: script=/resources/idlharness.js
+// META: global=window,dedicatedworker,shadowrealm-in-window
 
 idl_test(
   ['url'],
diff --git a/test/fixtures/wpt/url/resources/a-element-origin.js b/test/fixtures/wpt/url/resources/a-element-origin.js
index c1c24c8986b4aa..3e5e6cd0c76e43 100644
--- a/test/fixtures/wpt/url/resources/a-element-origin.js
+++ b/test/fixtures/wpt/url/resources/a-element-origin.js
@@ -1,4 +1,7 @@
-promise_test(() => fetch("resources/urltestdata.json").then(res => res.json()).then(runURLTests), "Loading data…");
+promise_test(() => Promise.all([
+  fetch("resources/urltestdata.json").then(res => res.json()),
+  fetch("resources/urltestdata-javascript-only.json").then(res => res.json()),
+]).then((tests) => tests.flat()).then(runURLTests), "Loading data…");
 
 function setBase(base) {
   document.getElementById("base").href = base
diff --git a/test/fixtures/wpt/url/resources/a-element.js b/test/fixtures/wpt/url/resources/a-element.js
index cff4160d328942..4a925d9d0e6b2f 100644
--- a/test/fixtures/wpt/url/resources/a-element.js
+++ b/test/fixtures/wpt/url/resources/a-element.js
@@ -1,4 +1,7 @@
-promise_test(() => fetch("resources/urltestdata.json").then(res => res.json()).then(runURLTests), "Loading data…");
+promise_test(() => Promise.all([
+  fetch("resources/urltestdata.json").then(res => res.json()),
+  fetch("resources/urltestdata-javascript-only.json").then(res => res.json()),
+]).then((tests) => tests.flat()).then(runURLTests), "Loading data…");
 
 function setBase(base) {
   document.getElementById("base").href = base;
diff --git a/test/fixtures/wpt/url/resources/urltestdata-javascript-only.json b/test/fixtures/wpt/url/resources/urltestdata-javascript-only.json
new file mode 100644
index 00000000000000..a3793c1f472f00
--- /dev/null
+++ b/test/fixtures/wpt/url/resources/urltestdata-javascript-only.json
@@ -0,0 +1,18 @@
+[
+    "See ../README.md for a description of the format.",
+    {
+        "input": "http://example.com/\uD800\uD801\uDFFE\uDFFF\uFDD0\uFDCF\uFDEF\uFDF0\uFFFE\uFFFF?\uD800\uD801\uDFFE\uDFFF\uFDD0\uFDCF\uFDEF\uFDF0\uFFFE\uFFFF",
+        "base": null,
+        "href": "http://example.com/%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF?%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF",
+        "origin": "http://example.com",
+        "protocol": "http:",
+        "username": "",
+        "password": "",
+        "host": "example.com",
+        "hostname": "example.com",
+        "port": "",
+        "pathname": "/%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF",
+        "search": "?%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF",
+        "hash": ""
+    }
+]
diff --git a/test/fixtures/wpt/url/resources/urltestdata.json b/test/fixtures/wpt/url/resources/urltestdata.json
index 53f6d575e165bf..0ebaf4cd4c42e7 100644
--- a/test/fixtures/wpt/url/resources/urltestdata.json
+++ b/test/fixtures/wpt/url/resources/urltestdata.json
@@ -4849,21 +4849,6 @@
     "search": "",
     "hash": ""
   },
-  {
-    "input": "http://example.com/\uD800\uD801\uDFFE\uDFFF\uFDD0\uFDCF\uFDEF\uFDF0\uFFFE\uFFFF?\uD800\uD801\uDFFE\uDFFF\uFDD0\uFDCF\uFDEF\uFDF0\uFFFE\uFFFF",
-    "base": null,
-    "href": "http://example.com/%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF?%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF",
-    "origin": "http://example.com",
-    "protocol": "http:",
-    "username": "",
-    "password": "",
-    "host": "example.com",
-    "hostname": "example.com",
-    "port": "",
-    "pathname": "/%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF",
-    "search": "?%EF%BF%BD%F0%90%9F%BE%EF%BF%BD%EF%B7%90%EF%B7%8F%EF%B7%AF%EF%B7%B0%EF%BF%BE%EF%BF%BF",
-    "hash": ""
-  },
   "Forbidden host code points",
   {
     "input": "sc://a\u0000b/",
@@ -9658,6 +9643,201 @@
     "search": "",
     "hash": ""
   },
+  {
+    "input": "android://x:0/a",
+    "base": null,
+    "href": "android://x:0/a",
+    "origin": "null",
+    "protocol": "android:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "/a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "drivefs://x:0/a",
+    "base": null,
+    "href": "drivefs://x:0/a",
+    "origin": "null",
+    "protocol": "drivefs:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "/a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "chromeos-steam://x:0/a",
+    "base": null,
+    "href": "chromeos-steam://x:0/a",
+    "origin": "null",
+    "protocol": "chromeos-steam:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "/a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "steam://x:0/a",
+    "base": null,
+    "href": "steam://x:0/a",
+    "origin": "null",
+    "protocol": "steam:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "/a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "materialized-view://x:0/a",
+    "base": null,
+    "href": "materialized-view://x:0/a",
+    "origin": "null",
+    "protocol": "materialized-view:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "/a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "android-app://x:0",
+    "base": null,
+    "href": "android-app://x:0",
+    "origin": "null",
+    "protocol": "android-app:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "chrome-distiller://x:0",
+    "base": null,
+    "href": "chrome-distiller://x:0",
+    "origin": "null",
+    "protocol": "chrome-distiller:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "chrome-extension://x:0",
+    "base": null,
+    "href": "chrome-extension://x:0",
+    "origin": "null",
+    "protocol": "chrome-extension:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "chrome-native://x:0",
+    "base": null,
+    "href": "chrome-native://x:0",
+    "origin": "null",
+    "protocol": "chrome-native:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "chrome-resource://x:0",
+    "base": null,
+    "href": "chrome-resource://x:0",
+    "origin": "null",
+    "protocol": "chrome-resource:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "chrome-search://x:0",
+    "base": null,
+    "href": "chrome-search://x:0",
+    "origin": "null",
+    "protocol": "chrome-search:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "fuchsia-dir://x:0",
+    "base": null,
+    "href": "fuchsia-dir://x:0",
+    "origin": "null",
+    "protocol": "fuchsia-dir:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "isolated-app://x:0",
+    "base": null,
+    "href": "isolated-app://x:0",
+    "origin": "null",
+    "protocol": "isolated-app:",
+    "username": "",
+    "password": "",
+    "host": "x:0",
+    "hostname": "x",
+    "port": "0",
+    "pathname": "",
+    "search": "",
+    "hash": ""
+  },
   "Scheme relative path starting with multiple slashes",
   {
     "input": "///test",
@@ -9812,5 +9992,101 @@
     "pathname": "/",
     "search": "",
     "hash": ""
+  },
+  "# Non-special URL and backslashes",
+  {
+    "input": "non-special:\\\\opaque",
+    "base": null,
+    "href": "non-special:\\\\opaque",
+    "origin": "null",
+    "protocol": "non-special:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "\\\\opaque",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "non-special:\\\\opaque/path",
+    "base": null,
+    "href": "non-special:\\\\opaque/path",
+    "origin": "null",
+    "protocol": "non-special:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "\\\\opaque/path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "non-special:\\\\opaque\\path",
+    "base": null,
+    "href": "non-special:\\\\opaque\\path",
+    "origin": "null",
+    "protocol": "non-special:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "\\\\opaque\\path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "non-special:\\/opaque",
+    "base": null,
+    "href": "non-special:\\/opaque",
+    "origin": "null",
+    "protocol": "non-special:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "\\/opaque",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "non-special:/\\path",
+    "base": null,
+    "href": "non-special:/\\path",
+    "origin": "null",
+    "protocol": "non-special:",
+    "username": "",
+    "password": "",
+    "host": "",
+    "hostname": "",
+    "port": "",
+    "pathname": "/\\path",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "input": "non-special://host\\a",
+    "base": null,
+    "failure": true
+  },
+  {
+    "input": "non-special://host/a\\b",
+    "base": null,
+    "href": "non-special://host/a\\b",
+    "origin": "null",
+    "protocol": "non-special:",
+    "username": "",
+    "password": "",
+    "host": "host",
+    "hostname": "host",
+    "port": "",
+    "pathname": "/a\\b",
+    "search": "",
+    "hash": ""
   }
 ]
diff --git a/test/fixtures/wpt/url/url-constructor.any.js b/test/fixtures/wpt/url/url-constructor.any.js
index bea06d025b7188..b4b639b813e975 100644
--- a/test/fixtures/wpt/url/url-constructor.any.js
+++ b/test/fixtures/wpt/url/url-constructor.any.js
@@ -50,4 +50,7 @@ function runURLTests(urlTests) {
   }
 }
 
-promise_test(() => fetch("resources/urltestdata.json").then(res => res.json()).then(runURLTests), "Loading data…");
+promise_test(() => Promise.all([
+  fetch("resources/urltestdata.json").then(res => res.json()),
+  fetch("resources/urltestdata-javascript-only.json").then(res => res.json()),
+]).then((tests) => tests.flat()).then(runURLTests), "Loading data…");
diff --git a/test/fixtures/wpt/url/url-origin.any.js b/test/fixtures/wpt/url/url-origin.any.js
index 599984c6c17dfe..b9e0c8585312f6 100644
--- a/test/fixtures/wpt/url/url-origin.any.js
+++ b/test/fixtures/wpt/url/url-origin.any.js
@@ -1,4 +1,7 @@
-promise_test(() => fetch("resources/urltestdata.json").then(res => res.json()).then(runURLTests), "Loading data…");
+promise_test(() => Promise.all([
+  fetch("resources/urltestdata.json").then(res => res.json()),
+  fetch("resources/urltestdata-javascript-only.json").then(res => res.json()),
+]).then((tests) => tests.flat()).then(runURLTests), "Loading data…");
 
 function runURLTests(urlTests) {
   for (const expected of urlTests) {
diff --git a/test/fixtures/wpt/versions.json b/test/fixtures/wpt/versions.json
index 859f9643e18b02..e29d2eabde1f26 100644
--- a/test/fixtures/wpt/versions.json
+++ b/test/fixtures/wpt/versions.json
@@ -72,7 +72,7 @@
     "path": "streams"
   },
   "url": {
-    "commit": "6a39784534e118acc102cf5252c542378831401d",
+    "commit": "67880a4eb83ca9aa732eec4b35a1971ff5bf37ff",
     "path": "url"
   },
   "user-timing": {