diff --git a/stdlib/2.7/datetime.pyi b/stdlib/2.7/datetime.pyi
index 6d3ce6517..30651f2bf 100644
--- a/stdlib/2.7/datetime.pyi
+++ b/stdlib/2.7/datetime.pyi
@@ -181,7 +181,7 @@ class datetime(object):
     @classmethod
     def fromordinal(cls, n: int) -> datetime: ...
     @classmethod
-    def now(cls, tz: timezone = ...) -> datetime: ...
+    def now(cls, tz: _tzinfo = ...) -> datetime: ...
     @classmethod
     def utcnow(cls) -> datetime: ...
     @classmethod
diff --git a/stdlib/3/datetime.pyi b/stdlib/3/datetime.pyi
index c0ee98b47..6e0294f8a 100644
--- a/stdlib/3/datetime.pyi
+++ b/stdlib/3/datetime.pyi
@@ -181,7 +181,7 @@ class datetime:
     @classmethod
     def fromordinal(cls, n: int) -> datetime: ...
     @classmethod
-    def now(cls, tz: timezone = ...) -> datetime: ...
+    def now(cls, tz: _tzinfo = ...) -> datetime: ...
     @classmethod
     def utcnow(cls) -> datetime: ...
     @classmethod