diff --git a/sncf/api/views.py b/sncf/api/views.py
index 4e40115..8665375 100644
--- a/sncf/api/views.py
+++ b/sncf/api/views.py
@@ -1,6 +1,8 @@
 from datetime import datetime, timedelta, date
 
 from django.db.models import F, Q, Value
+from django.utils.decorators import method_decorator
+from django.views.decorators.http import last_modified
 from django_filters.rest_framework import DjangoFilterBackend
 from rest_framework import viewsets
 from rest_framework.filters import OrderingFilter
@@ -12,6 +14,11 @@ from sncfgtfs.models import Agency, Stop, Route, Trip, StopTime, Calendar, Calen
     Transfer, FeedInfo
 
 
+LAST_MODIFIED_CACHE = last_modified(lambda *args, **kwargs: datetime.fromisoformat(FeedInfo.objects.get().version))
+
+
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class AgencyViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Agency.objects.all()
     serializer_class = AgencySerializer
@@ -19,6 +26,8 @@ class AgencyViewSet(viewsets.ReadOnlyModelViewSet):
     filterset_fields = '__all__'
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=[LAST_MODIFIED_CACHE])
 class StopViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Stop.objects.all()
     serializer_class = StopSerializer
@@ -26,6 +35,8 @@ class StopViewSet(viewsets.ReadOnlyModelViewSet):
     filterset_fields = '__all__'
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class RouteViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Route.objects.all()
     serializer_class = RouteSerializer
@@ -33,6 +44,8 @@ class RouteViewSet(viewsets.ReadOnlyModelViewSet):
     filterset_fields = '__all__'
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class TripViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Trip.objects.all()
     serializer_class = TripSerializer
@@ -40,6 +53,8 @@ class TripViewSet(viewsets.ReadOnlyModelViewSet):
     filterset_fields = '__all__'
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class StopTimeViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = StopTime.objects.order_by('id').all()
     serializer_class = StopTimeSerializer
@@ -49,6 +64,8 @@ class StopTimeViewSet(viewsets.ReadOnlyModelViewSet):
     ordering = ['stop_sequence', ]
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class CalendarViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Calendar.objects.all()
     serializer_class = CalendarSerializer
@@ -56,6 +73,8 @@ class CalendarViewSet(viewsets.ReadOnlyModelViewSet):
     filterset_fields = '__all__'
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class CalendarDateViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = CalendarDate.objects.all()
     serializer_class = CalendarDateSerializer
@@ -63,12 +82,16 @@ class CalendarDateViewSet(viewsets.ReadOnlyModelViewSet):
     filterset_fields = '__all__'
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class TransferViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = Transfer.objects.all()
     serializer_class = TransferSerializer
     filter_backends = [DjangoFilterBackend]
 
 
+@method_decorator(name='list', decorator=LAST_MODIFIED_CACHE)
+@method_decorator(name='retrieve', decorator=LAST_MODIFIED_CACHE)
 class FeedInfoViewSet(viewsets.ReadOnlyModelViewSet):
     queryset = FeedInfo.objects.all()
     serializer_class = FeedInfoSerializer