@@ -809,6 +809,36 @@ def f(x: int):
             {"x": "int"},
         )
 
+    def test_del_annotations(self):
+        # gh-132285
+        called = False
+        class A:
+            def __annotate__(format):
+                nonlocal called
+                called = True
+                return {'a': int}
+
+        for format in Format:
+            if format == Format.VALUE_WITH_FAKE_GLOBALS:
+                continue
+
+            called = False
+            with self.subTest(format=format):
+                self.assertEqual(
+                    annotationlib.get_annotations(A, format=format),
+                    {'a': int},
+                )
+                self.assertTrue(called)
+
+                del A.__annotations__
+                called = False
+
+                self.assertEqual(
+                    annotationlib.get_annotations(A, format=format),
+                    {'a': int},
+                )
+                self.assertTrue(called)
+
     def test_non_dict_annotations(self):
         class WeirdAnnotations:
             @property