diff --git a/src/c3nav/mapdata/models/update.py b/src/c3nav/mapdata/models/update.py
index 3245a547..bba543a9 100644
--- a/src/c3nav/mapdata/models/update.py
+++ b/src/c3nav/mapdata/models/update.py
@@ -63,11 +63,11 @@ class MapUpdate(models.Model):
         return self.build_cache_key(self.pk, int(make_naive(self.datetime).timestamp()))
 
     @classmethod
-    def current_cache_key(cls):
+    def current_cache_key(cls, request=None):
         return cls.build_cache_key(*cls.last_update())
 
     @classmethod
-    def current_processed_cache_key(cls):
+    def current_processed_cache_key(cls, request=None):
         return cls.build_cache_key(*cls.last_processed_update())
 
     @staticmethod