diff --git a/sphinx_autodoc_typehints.py b/sphinx_autodoc_typehints.py
index e9e6ce5c..c4c00d3e 100644
--- a/sphinx_autodoc_typehints.py
+++ b/sphinx_autodoc_typehints.py
@@ -204,7 +204,7 @@ def get_all_type_hints(obj, name):
 
     try:
         rv = get_type_hints(obj)
-    except (AttributeError, TypeError, RecursionError):
+    except (AttributeError, TypeError, RecursionError, KeyError):
         # Introspecting a slot wrapper will raise TypeError, and and some recursive type
         # definitions will cause a RecursionError (https://github.com/python/typing/issues/574).
         pass
@@ -225,7 +225,7 @@ def get_all_type_hints(obj, name):
 
     try:
         rv = get_type_hints(obj)
-    except (AttributeError, TypeError):
+    except (AttributeError, TypeError, KeyError):
         pass
     except NameError as exc:
         logger.warning('Cannot resolve forward reference in type annotations of "%s": %s',