diff --git a/stdlib/2.7/typing.pyi b/stdlib/2.7/typing.pyi
index edd0a8d00..a04ad24d5 100644
--- a/stdlib/2.7/typing.pyi
+++ b/stdlib/2.7/typing.pyi
@@ -62,7 +62,7 @@ class SupportsRound(Generic[_T]):
 
 class Reversible(Generic[_T_co]):
     @abstractmethod
-    def __reversed__(self) -> Iterator[_T]: ...
+    def __reversed__(self) -> Iterator[_T_co]: ...
 
 class Sized(metaclass=ABCMeta):
     @abstractmethod
diff --git a/stdlib/3/typing.pyi b/stdlib/3/typing.pyi
index 783874d47..7181de306 100644
--- a/stdlib/3/typing.pyi
+++ b/stdlib/3/typing.pyi
@@ -72,7 +72,7 @@ class SupportsRound(Generic[_T]):
 
 class Reversible(Generic[_T_co]):
     @abstractmethod
-    def __reversed__(self) -> Iterator[_T]: ...
+    def __reversed__(self) -> Iterator[_T_co]: ...
 
 class Sized(metaclass=ABCMeta):
     @abstractmethod