diff --git a/test/fixtures/wpt/README.md b/test/fixtures/wpt/README.md
index fea9ea89123875..c587a8d021fd40 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/6a2f322376/resources
 - streams: https://github.com/web-platform-tests/wpt/tree/bc9dcbbf1a/streams
-- url: https://github.com/web-platform-tests/wpt/tree/fc3e651593/url
+- url: https://github.com/web-platform-tests/wpt/tree/7a3645b79a/url
 - urlpattern: https://github.com/web-platform-tests/wpt/tree/a2e15ad405/urlpattern
 - user-timing: https://github.com/web-platform-tests/wpt/tree/5ae85bf826/user-timing
 - wasm/jsapi: https://github.com/web-platform-tests/wpt/tree/65a2134d50/wasm/jsapi
diff --git a/test/fixtures/wpt/url/IdnaTestV2-removed.window.js b/test/fixtures/wpt/url/IdnaTestV2-removed.any.js
similarity index 97%
rename from test/fixtures/wpt/url/IdnaTestV2-removed.window.js
rename to test/fixtures/wpt/url/IdnaTestV2-removed.any.js
index 0f70f84816acd7..7e5d27b50bfc02 100644
--- a/test/fixtures/wpt/url/IdnaTestV2-removed.window.js
+++ b/test/fixtures/wpt/url/IdnaTestV2-removed.any.js
@@ -1,3 +1,5 @@
+// META: global=window
+
 promise_test(() => fetch("resources/IdnaTestV2-removed.json").then(res => res.json()).then(runTests), "Loading data…");
 
 function runTests(idnaTests) {
diff --git a/test/fixtures/wpt/url/IdnaTestV2.window.js b/test/fixtures/wpt/url/IdnaTestV2.any.js
similarity index 97%
rename from test/fixtures/wpt/url/IdnaTestV2.window.js
rename to test/fixtures/wpt/url/IdnaTestV2.any.js
index 4bfa3118acec94..0c2fdee0392e00 100644
--- a/test/fixtures/wpt/url/IdnaTestV2.window.js
+++ b/test/fixtures/wpt/url/IdnaTestV2.any.js
@@ -1,3 +1,5 @@
+// META: global=window
+
 promise_test(() => fetch("resources/IdnaTestV2.json").then(res => res.json()).then(runTests), "Loading data…");
 
 function runTests(idnaTests) {
diff --git a/test/fixtures/wpt/url/resources/urltestdata.json b/test/fixtures/wpt/url/resources/urltestdata.json
index 690a48870fd0d9..e88d22690361ee 100644
--- a/test/fixtures/wpt/url/resources/urltestdata.json
+++ b/test/fixtures/wpt/url/resources/urltestdata.json
@@ -1044,6 +1044,21 @@
     "search": "",
     "hash": ""
   },
+  {
+    "input": "http:/",
+    "base": "http://example.com/",
+    "href": "http://example.com/",
+    "origin": "http://example.com",
+    "protocol": "http:",
+    "username": "",
+    "password": "",
+    "host": "example.com",
+    "hostname": "example.com",
+    "port": "",
+    "pathname": "/",
+    "search": "",
+    "hash": ""
+  },
   {
     "input": "ftp:/example.com/",
     "base": "http://example.org/foo/bar",
@@ -10342,6 +10357,52 @@
     "search": "",
     "hash": ""
   },
+  "# Non-special relative URL and backslashes",
+  {
+    "comment": "Non-special relative: \\ should not enter RelativeSlash state",
+    "input": "\\a",
+    "base": "foo://foo/a",
+    "href": "foo://foo/\\a",
+    "protocol": "foo:",
+    "username": "",
+    "password": "",
+    "host": "foo",
+    "hostname": "foo",
+    "port": "",
+    "pathname": "/\\a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "comment": "Non-special relative: \\ should not enter RelativeSlash, so / is a path separator",
+    "input": "\\/a",
+    "base": "foo://foo/a",
+    "href": "foo://foo/\\/a",
+    "protocol": "foo:",
+    "username": "",
+    "password": "",
+    "host": "foo",
+    "hostname": "foo",
+    "port": "",
+    "pathname": "/\\/a",
+    "search": "",
+    "hash": ""
+  },
+  {
+    "comment": "Non-special relative: \\\\ should not trigger authority parsing",
+    "input": "\\\\a",
+    "base": "foo://foo/a",
+    "href": "foo://foo/\\\\a",
+    "protocol": "foo:",
+    "username": "",
+    "password": "",
+    "host": "foo",
+    "hostname": "foo",
+    "port": "",
+    "pathname": "/\\\\a",
+    "search": "",
+    "hash": ""
+  },
   {
     "comment": "Fragment with <> on data: URI",
     "input": "data:text/plain,test#<foo> <bar>",
diff --git a/test/fixtures/wpt/versions.json b/test/fixtures/wpt/versions.json
index b69eafd6741950..7c7f8ce122dff8 100644
--- a/test/fixtures/wpt/versions.json
+++ b/test/fixtures/wpt/versions.json
@@ -72,7 +72,7 @@
     "path": "streams"
   },
   "url": {
-    "commit": "fc3e651593fab938433613eb5ad0b4dbd5a4e167",
+    "commit": "7a3645b79ade98a05066a09ce88e143daac31535",
     "path": "url"
   },
   "urlpattern": {