diff --git a/test/fixtures/wpt/README.md b/test/fixtures/wpt/README.md
index c8210edb569c17..6bcd1e51efd83b 100644
--- a/test/fixtures/wpt/README.md
+++ b/test/fixtures/wpt/README.md
@@ -27,7 +27,7 @@ Last update:
 - resource-timing: https://github.com/web-platform-tests/wpt/tree/22d38586d0/resource-timing
 - resources: https://github.com/web-platform-tests/wpt/tree/919874f84f/resources
 - streams: https://github.com/web-platform-tests/wpt/tree/517e945bbf/streams
-- url: https://github.com/web-platform-tests/wpt/tree/84782d9315/url
+- url: https://github.com/web-platform-tests/wpt/tree/c2d7e70b52/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/failure.html b/test/fixtures/wpt/url/failure.html
index 8a408412668fd3..e61f462f97456f 100644
--- a/test/fixtures/wpt/url/failure.html
+++ b/test/fixtures/wpt/url/failure.html
@@ -10,6 +10,8 @@
 
 function runTests(testData) {
   for (const test of testData) {
+
+    // skip comments, inputs we expect to pass and relative URLs
     if (typeof test === "string" || !test.failure || test.base !== null) {
       continue;
     }
diff --git a/test/fixtures/wpt/url/resources/a-element-origin.js b/test/fixtures/wpt/url/resources/a-element-origin.js
index de72988ea93c12..c1c24c8986b4aa 100644
--- a/test/fixtures/wpt/url/resources/a-element-origin.js
+++ b/test/fixtures/wpt/url/resources/a-element-origin.js
@@ -21,6 +21,10 @@ function runURLTests(urlTests) {
     if (expected.base === null && expected.input.startsWith("#"))
       continue;
 
+    // HTML special cases data: and javascript: URLs in <base>
+    if (expected.base !== null && (expected.base.startsWith("data:") || expected.base.startsWith("javascript:")))
+      continue;
+
     // We cannot use a null base for HTML tests
     const base = expected.base === null ? "about:blank" : expected.base;
 
diff --git a/test/fixtures/wpt/url/resources/a-element.js b/test/fixtures/wpt/url/resources/a-element.js
index d87937d002b24a..cff4160d328942 100644
--- a/test/fixtures/wpt/url/resources/a-element.js
+++ b/test/fixtures/wpt/url/resources/a-element.js
@@ -21,6 +21,10 @@ function runURLTests(urlTests) {
     if (expected.relativeTo === "any-base")
       continue;
 
+    // HTML special cases data: and javascript: URLs in <base>
+    if (expected.base !== null && (expected.base.startsWith("data:") || expected.base.startsWith("javascript:")))
+      continue;
+
     // We cannot use a null base for HTML tests
     const base = expected.base === null ? "about:blank" : expected.base;
 
diff --git a/test/fixtures/wpt/url/resources/setters_tests.json b/test/fixtures/wpt/url/resources/setters_tests.json
index 347caf49ab0520..82adf4cdce270b 100644
--- a/test/fixtures/wpt/url/resources/setters_tests.json
+++ b/test/fixtures/wpt/url/resources/setters_tests.json
@@ -2021,6 +2021,24 @@
                 "href": "sc:/space%20",
                 "pathname": "/space%20"
             }
+        },
+        {
+            "comment": "Trailing space should be encoded",
+            "href": "http://example.net",
+            "new_value": " ",
+            "expected": {
+                "href": "http://example.net/%20",
+                "pathname": "/%20"
+            }
+        },
+        {
+            "comment": "Trailing C0 control should be encoded",
+            "href": "http://example.net",
+            "new_value": "\u0000",
+            "expected": {
+                "href": "http://example.net/%00",
+                "pathname": "/%00"
+            }
         }
     ],
     "search": [
@@ -2141,6 +2159,24 @@
                 "href": "sc:space  #fragment",
                 "search": ""
             }
+        },
+        {
+            "comment": "Trailing space should be encoded",
+            "href": "http://example.net",
+            "new_value": " ",
+            "expected": {
+                "href": "http://example.net/?%20",
+                "search": "?%20"
+            }
+        },
+        {
+            "comment": "Trailing C0 control should be encoded",
+            "href": "http://example.net",
+            "new_value": "\u0000",
+            "expected": {
+                "href": "http://example.net/?%00",
+                "search": "?%00"
+            }
         }
     ],
     "hash": [
@@ -2311,6 +2347,24 @@
                 "href": "sc:space  ?query",
                 "hash": ""
             }
+        },
+        {
+            "comment": "Trailing space should be encoded",
+            "href": "http://example.net",
+            "new_value": " ",
+            "expected": {
+                "href": "http://example.net/#%20",
+                "hash": "#%20"
+            }
+        },
+        {
+            "comment": "Trailing C0 control should be encoded",
+            "href": "http://example.net",
+            "new_value": "\u0000",
+            "expected": {
+                "href": "http://example.net/#%00",
+                "hash": "#%00"
+            }
         }
     ],
     "href": [
diff --git a/test/fixtures/wpt/url/resources/urltestdata.json b/test/fixtures/wpt/url/resources/urltestdata.json
index ec189871d90814..287a84b467a48b 100644
--- a/test/fixtures/wpt/url/resources/urltestdata.json
+++ b/test/fixtures/wpt/url/resources/urltestdata.json
@@ -7851,7 +7851,6 @@
     "input": "blob:file://host/path",
     "base": null,
     "href": "blob:file://host/path",
-    "origin": "null",
     "protocol": "blob:",
     "username": "",
     "password": "",
diff --git a/test/fixtures/wpt/url/url-statics-canparse.any.js b/test/fixtures/wpt/url/url-statics-canparse.any.js
index c87fcb4f56fcdd..74f3da31f0d175 100644
--- a/test/fixtures/wpt/url/url-statics-canparse.any.js
+++ b/test/fixtures/wpt/url/url-statics-canparse.any.js
@@ -6,23 +6,23 @@
     "expected": false
   },
   {
-    "url": "a:b",
+    "url": "aaa:b",
     "base": undefined,
     "expected": true
   },
   {
     "url": undefined,
-    "base": "a:b",
+    "base": "aaa:b",
     "expected": false
   },
   {
-    "url": "a:/b",
+    "url": "aaa:/b",
     "base": undefined,
     "expected": true
   },
   {
     "url": undefined,
-    "base": "a:/b",
+    "base": "aaa:/b",
     "expected": true
   },
   {
diff --git a/test/fixtures/wpt/url/urlsearchparams-delete.any.js b/test/fixtures/wpt/url/urlsearchparams-delete.any.js
index f9c623b90b175d..c597142c51d5bf 100644
--- a/test/fixtures/wpt/url/urlsearchparams-delete.any.js
+++ b/test/fixtures/wpt/url/urlsearchparams-delete.any.js
@@ -70,3 +70,14 @@ test(() => {
   params.delete('a', 'c');
   assert_equals(params.toString(), 'a=b&a=d');
 }, "Two-argument delete()");
+
+test(() => {
+  const params = new URLSearchParams();
+  params.append('a', 'b');
+  params.append('a', 'c');
+  params.append('b', 'c');
+  params.append('b', 'd');
+  params.delete('b', 'c');
+  params.delete('a', undefined);
+  assert_equals(params.toString(), 'b=d');
+}, "Two-argument delete() respects undefined as second arg");
diff --git a/test/fixtures/wpt/url/urlsearchparams-has.any.js b/test/fixtures/wpt/url/urlsearchparams-has.any.js
index 54cbf286db4a3d..2133a5da2f8b91 100644
--- a/test/fixtures/wpt/url/urlsearchparams-has.any.js
+++ b/test/fixtures/wpt/url/urlsearchparams-has.any.js
@@ -35,3 +35,11 @@ test(() => {
   params.delete('a', 'b');
   assert_true(params.has('a', 'd'));
 }, "Two-argument has()");
+
+test(() => {
+  const params = new URLSearchParams("a=b&a=d&c&e&");
+  assert_true(params.has('a', 'b'));
+  assert_false(params.has('a', 'c'));
+  assert_true(params.has('a', 'd'));
+  assert_true(params.has('a', undefined));
+}, "Two-argument has() respects undefined as second arg");
\ No newline at end of file
diff --git a/test/fixtures/wpt/versions.json b/test/fixtures/wpt/versions.json
index 12b65f8f31f0ba..27daee082506fb 100644
--- a/test/fixtures/wpt/versions.json
+++ b/test/fixtures/wpt/versions.json
@@ -68,7 +68,7 @@
     "path": "streams"
   },
   "url": {
-    "commit": "84782d931516aa13cfe32dc7eaa1377b4d947d66",
+    "commit": "c2d7e70b52cbd9a5b938aa32f37078d7a71e0b21",
     "path": "url"
   },
   "user-timing": {