diff --git a/modules/canaltp/backend.py b/modules/canaltp/backend.py
index 7d5c3f90..525bda1c 100644
--- a/modules/canaltp/backend.py
+++ b/modules/canaltp/backend.py
@@ -39,7 +39,7 @@ class CanalTPBackend(BaseBackend, ICapTravel):
         for _id, name in self.browser.iter_station_search(pattern):
             yield Station(_id, name)
 
-    def iter_station_departures(self, station_id, arrival_id=None):
+    def iter_station_departures(self, station_id, arrival_id=None, date=None):
         for i, d in enumerate(self.browser.iter_station_departures(station_id, arrival_id)):
             departure = Departure(i, d['type'], d['time'])
             departure.departure_station = d['departure']
diff --git a/modules/transilien/backend.py b/modules/transilien/backend.py
index f7e202b9..1dff7376 100644
--- a/modules/transilien/backend.py
+++ b/modules/transilien/backend.py
@@ -42,7 +42,7 @@ class TransilienBackend(BaseBackend, ICapTravel):
             if name.lower().find(pattern) >= 0:
                 yield Station(_id, name)
 
-    def iter_station_departures(self, station_id, arrival_id=None):
+    def iter_station_departures(self, station_id, arrival_id=None, date=None):
         with self.browser:
             for i, d in enumerate(self.browser.iter_station_departures(station_id, arrival_id)):
                 departure = Departure(i, d['type'], d['time'])
diff --git a/weboob/capabilities/travel.py b/weboob/capabilities/travel.py
index 8f8cd756..9893dc81 100644
--- a/weboob/capabilities/travel.py
+++ b/weboob/capabilities/travel.py
@@ -107,7 +107,7 @@ class ICapTravel(IBaseCap):
         """
         raise NotImplementedError()
 
-    def iter_station_departures(self, station_id, arrival_id=None):
+    def iter_station_departures(self, station_id, arrival_id=None, date=None):
         """
         Iterate on departures.
 
@@ -115,6 +115,8 @@ class ICapTravel(IBaseCap):
         :type station_id: str
         :param arrival_id: optionnal arrival station ID
         :type arrival_id: str
+        :param date: optional date
+        :type date: datetime.datetime
         :rtype: iter[:class:`Departure`]
         """
         raise NotImplementedError()