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-rw-r--r--sphinx/util/inspect.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 27f478675..1eaccb678 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -312,6 +312,9 @@ def isgenericalias(obj: Any) -> bool:
elif (hasattr(types, 'GenericAlias') and # only for py39+
isinstance(obj, types.GenericAlias)): # type: ignore
return True
+ elif (hasattr(typing, '_SpecialGenericAlias') and # for py39+
+ isinstance(obj, typing._SpecialGenericAlias)): # type: ignore
+ return True
else:
return False