diff --git a/changelog.d/13135.misc b/changelog.d/13135.misc
new file mode 100644
index 0000000000..f096dd8749
--- /dev/null
+++ b/changelog.d/13135.misc
@@ -0,0 +1 @@
+Enforce type annotations for `tests.test_server`.
diff --git a/mypy.ini b/mypy.ini
index 4b08f45c6d..e062cf43a2 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -56,7 +56,6 @@ exclude = (?x)
    |tests/server.py
    |tests/server_notices/test_resource_limits_server_notices.py
    |tests/test_metrics.py
-   |tests/test_server.py
    |tests/test_state.py
    |tests/test_terms_auth.py
    |tests/util/caches/test_cached_call.py