Index: frozenlist-1.8.0/tests/test_frozenlist.py
===================================================================
--- frozenlist-1.8.0.orig/tests/test_frozenlist.py
+++ frozenlist-1.8.0/tests/test_frozenlist.py
@@ -29,6 +29,9 @@ class FrozenListMixin:
         for name in set(dir(MutableSequence)) - self.SKIP_METHODS:
             if name.startswith("_") and not name.endswith("_"):
                 continue
+            # Do not check annotation internals
+            if name in ("__annotations_cache__", "__annotate_func__"):
+                continue
             assert hasattr(self.FrozenList, name)
 
     def test_ctor_default(self) -> None: