diff --git a/README.md b/README.md
index b8a7093ac..7951c626f 100644
--- a/README.md
+++ b/README.md
@@ -103,4 +103,10 @@ The `Publish Atlas website` workflow revalidates and regenerates `site/` before
 
 The atlas covers interactive commands, nested subcommands, CLI flags, configuration, environment variables, shortcuts, hooks, permissions, MCP, skills, and agent controls across all six ecosystems. It stays a living reference rather than a claim that fast-moving vendor surfaces can ever be permanently complete. See [the roadmap](docs/ROADMAP.md).
 
+## Acknowledgements
+
+Thanks to the people who have improved the atlas beyond its data:
+
+- [@WhiteHades](https://github.com/WhiteHades) — case-sensitive CLI flag ranking, accessible skip links and mobile navigation, route collision checks, HTTPS redirect enforcement, and validation that reports malformed records instead of raising.
+
 Released under the [MIT License](LICENSE).
diff --git a/tests/test_check_sources.py b/tests/test_check_sources.py
index 6985d12a7..519147831 100644
--- a/tests/test_check_sources.py
+++ b/tests/test_check_sources.py
@@ -13,9 +13,15 @@ class SourceCheckerTests(unittest.TestCase):
     def setUp(self):
         self.responses = {}
         self.requests = []
-        self.enterContext(patch.object(urllib.request, "_opener", None))
+        # TestCase.enterContext is 3.11+; start/addCleanup keeps the suite runnable on 3.10.
+        self.start_patch(patch.object(urllib.request, "_opener", None))
         for handler, method in ((urllib.request.HTTPSHandler, "https_open"), (urllib.request.HTTPHandler, "http_open")):
-            self.enterContext(patch.object(handler, method, side_effect=self.respond))
+            self.start_patch(patch.object(handler, method, side_effect=self.respond))
+
+    def start_patch(self, patcher):
+        value = patcher.start()
+        self.addCleanup(patcher.stop)
+        return value
 
     def respond(self, request):
         self.requests.append(request.full_url)