diff --git a/pandas/core/arrays/period.py b/pandas/core/arrays/period.py
index 96a075dd21bf9..235bd2753742f 100644
--- a/pandas/core/arrays/period.py
+++ b/pandas/core/arrays/period.py
@@ -272,7 +272,7 @@ def _generate_range(cls, start, end, periods, freq, fields):
 
     def _unbox_scalar(
         self, value: Union[Period, NaTType], setitem: bool = False
-    ) -> int:
+    ) -> np.int64:
         if value is NaT:
             return np.int64(value.value)
         elif isinstance(value, self._scalar_type):