diff --git a/pandas/_libs/tslibs/__init__.py b/pandas/_libs/tslibs/__init__.py
index c622121578dcb..b626959203295 100644
--- a/pandas/_libs/tslibs/__init__.py
+++ b/pandas/_libs/tslibs/__init__.py
@@ -34,6 +34,7 @@
     "npy_unit_to_abbrev",
     "get_supported_reso",
     "guess_datetime_format",
+    "add_overflowsafe",
 ]
 
 from pandas._libs.tslibs import dtypes  # pylint: disable=import-self
@@ -55,6 +56,7 @@
 from pandas._libs.tslibs.np_datetime import (
     OutOfBoundsDatetime,
     OutOfBoundsTimedelta,
+    add_overflowsafe,
     astype_overflowsafe,
     is_unitless,
     py_get_unit_from_dtype as get_unit_from_dtype,