Fix typing issue

robert-koch-institut · Dec 19, 2023 · b3e140e · b3e140e
1 parent 95aa282
commit b3e140e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mex/common/testing/joker.py b/mex/common/testing/joker.py
@@ -10,7 +10,7 @@ class Joker:
         assert value == {"predictable": 42, "timestamp": Joker()}
     """
 
-    _repr_cache = None
+    _repr_cache: str | None = None
 
     def __eq__(self, obj: Any) -> bool:
         """Pretend to be equal to any other object."""