diff --git a/hosting/management/commands/fetch_stripe_bills.py b/hosting/management/commands/fetch_stripe_bills.py
index 2a37ed61..e321179d 100644
--- a/hosting/management/commands/fetch_stripe_bills.py
+++ b/hosting/management/commands/fetch_stripe_bills.py
@@ -35,7 +35,7 @@ class Command(BaseCommand):
 
                     all_invoices_response = stripe_utils.get_all_invoices(
                         user.stripecustomer.stripe_id,
-                        created=created_gt
+                        created_gt=created_gt
                     )
                     if all_invoices_response['error'] is not None:
                         self.stdout.write(self.style.ERROR(all_invoices_response['error']))
diff --git a/utils/stripe_utils.py b/utils/stripe_utils.py
index b43470fa..577eab80 100644
--- a/utils/stripe_utils.py
+++ b/utils/stripe_utils.py
@@ -123,19 +123,19 @@ class StripeUtils(object):
         return card_details
 
     @handleStripeError
-    def get_all_invoices(self, customer_id, created):
+    def get_all_invoices(self, customer_id, created_gt):
         return_list = []
         has_more_invoices = True
         starting_after = False
         while has_more_invoices:
             if starting_after:
                 invoices = stripe.Invoice.list(
-                    limit=10, customer=customer_id, created=created,
+                    limit=10, customer=customer_id, created={'gt': created_gt},
                     starting_after=starting_after
                 )
             else:
                 invoices = stripe.Invoice.list(
-                    limit=10, customer=customer_id, created=created
+                    limit=10, customer=customer_id, created={'gt': created_gt}
                 )
             has_more_invoices = invoices.has_more
             for invoice in invoices.data: