diff --git a/frappe/utils/data.py b/frappe/utils/data.py
index 40e8685484..261996a5ee 100644
--- a/frappe/utils/data.py
+++ b/frappe/utils/data.py
@@ -475,6 +475,16 @@ def get_quarter_start(dt, as_str: bool = False) -> str | datetime.date:
 	return first_date_of_quarter.strftime(DATE_FORMAT) if as_str else first_date_of_quarter
 
 
+@typing.overload
+def get_first_day_of_week(dt: DateTimeLikeObject, as_str: Literal[False] = False) -> datetime.date:
+	...
+
+
+@typing.overload
+def get_first_day_of_week(dt: DateTimeLikeObject, as_str: Literal[True] = False) -> str:
+	...
+
+
 def get_first_day_of_week(dt: DateTimeLikeObject, as_str=False) -> datetime.date | str:
 	"""Returns the first day of the week (as per System Settings or Sunday by default) for the given datetime like object (`dt`).
 
@@ -507,6 +517,16 @@ def get_year_start(dt: DateTimeLikeObject, as_str=False) -> str | datetime.date:
 	return date.strftime(DATE_FORMAT) if as_str else date
 
 
+@typing.overload
+def get_last_day_of_week(dt: DateTimeLikeObject, as_str: Literal[False] = False) -> datetime.date:
+	...
+
+
+@typing.overload
+def get_last_day_of_week(dt: DateTimeLikeObject, as_str: Literal[True] = False) -> str:
+	...
+
+
 def get_last_day_of_week(dt: DateTimeLikeObject, as_str=False) -> datetime.date | str:
 	"""Returns the last day of the week (first day is taken from System Settings or Sunday by default) for the given datetime like object (`dt`).