diff --git a/WORKSPACE b/WORKSPACE
index 7aaac3f25c1..65b2641d921 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -103,9 +103,9 @@ http_archive(
     build_file = "//:build/BUILD.ada-url",
     patch_args = ["-p1"],
     patches = [],
-    sha256 = "db9a9dbc64d56b0795fa188076d799d643dec7b14370cee2ab3ba76c7e298bc8",
+    sha256 = "66603d861bc3804abfca2eff5fd6f9cb70e3d17ea3d03f1168b490a8438e21a5",
     type = "zip",
-    url = "https://github.com/ada-url/ada/releases/download/v2.7.6/singleheader.zip",
+    url = "https://github.com/ada-url/ada/releases/download/v2.7.7/singleheader.zip",
 )
 
 http_archive(
diff --git a/src/workerd/api/tests/url-test.js b/src/workerd/api/tests/url-test.js
index 04ee88087e9..5207acbb0c4 100644
--- a/src/workerd/api/tests/url-test.js
+++ b/src/workerd/api/tests/url-test.js
@@ -8833,6 +8833,17 @@ export const wptTestURLSearchParamsConstructor = {
       throws(() => new URLSearchParams([[1,2,3]]));
     }
 
+    {
+      let params = new URLSearchParams('a=a/b~');
+      strictEqual(params.toString(), 'a=a%2Fb%7E');
+
+      let url = new URL('https://example.org?a=a/b~');
+      strictEqual(url.search, '?a=a/b~');
+      strictEqual(url.searchParams.toString(), 'a=a%2Fb%7E');
+      console.log(url.search);
+      console.log(url.searchParams.toString());
+    }
+
     [
       { "input": {"+": "%C2"}, "output": [["+", "%C2"]], "name": "object with +" },
       { "input": {c: "x", a: "?"}, "output": [["c", "x"], ["a", "?"]], "name": "object with two keys" },