diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index dc98156..dfede8e 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,5 +1,9 @@
 # Change Log
 All notable changes to this project will be documented in this file.
+## [0.6.6]
+### Fixed
+- refresh_customers command
+
 ## [0.6.5]
 ### Fixed
 - setting StripeCustomer.default_source when creating a new customer from API
diff --git a/aa_stripe/__init__.py b/aa_stripe/__init__.py
index 817dbf9..ce68afc 100644
--- a/aa_stripe/__init__.py
+++ b/aa_stripe/__init__.py
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 __title__ = "Arabella Stripe"
-__version__ = "0.6.5"
+__version__ = "0.6.6"
 __author__ = "Jacek Ostanski"
 __license__ = "MIT"
 __copyright__ = "Copyright 2017 Arabella"
diff --git a/aa_stripe/management/commands/refresh_customers.py b/aa_stripe/management/commands/refresh_customers.py
index e43440e..5de3cf7 100644
--- a/aa_stripe/management/commands/refresh_customers.py
+++ b/aa_stripe/management/commands/refresh_customers.py
@@ -32,7 +32,7 @@ def handle(self, *args, **options):
 
             for stripe_customer in response["data"]:
                 updated_count += StripeCustomer.objects.filter(stripe_customer_id=stripe_customer["id"]).update(
-                    sources=stripe_customer["sources"], default_source=stripe_customer["default_source"]
+                    sources=stripe_customer["sources"]["data"], default_source=stripe_customer["default_source"]
                 )
 
             if not response["has_more"]:
diff --git a/tests/test_customers.py b/tests/test_customers.py
index 7b849e2..3fab1e2 100644
--- a/tests/test_customers.py
+++ b/tests/test_customers.py
@@ -147,37 +147,36 @@ def setUp(self):
 
     @requests_mock.Mocker()
     def test_command(self, m):
-        customer1_data = {
-            "id": "cus_xyz",
-            "object": "customer",
-            "sources": [
-                {"id": "card_1"}
-            ],
-            "default_source": "card_1"
-        }
-        customer2_data = customer1_data.copy()
-        customer2_data["id"] = "cus_2"
-        customer2_data["sources"] = [{"id": "card_2"}]
-        customer2_data["default_source"] = "card_2"
-        customer2_data = customer1_data.copy()
-        customer2_data["id"] = "cus_2"
-        customer2_data["sources"] = []
-        customer2_data["default_source"] = None
+        def get_customer_data(customer_id, sources, default_source=None):
+            return {
+                "id": customer_id,
+                "object": "customer",
+                "sources": {
+                    "object": "list",
+                    "data": sources,
+                    "has_more": False,
+                    "total_count": 1,
+                    "url": f"/v1/customers/{customer_id}/sources"
+                },
+                "default_source": default_source
+            }
+
         stripe_response_part1 = {
+            "object": "list",
+            "url": "/v1/customers",
+            "has_more": True,
+            "data": [get_customer_data("cus_xyz", [{"id": "card_1"}], default_source="card_1")]
+        }
+        stripe_response_part2 = {
             "object": "list",
             "url": "/v1/customers",
             "has_more": False,
-            "data": [
-                customer1_data
-            ]
+            "data": [get_customer_data("cus_b", [{"id": "card_2"}])]
         }
-        stripe_response_part2 = stripe_response_part1.copy()
-        stripe_response_part2["has_more"] = False
-        stripe_response_part2["data"] = [customer2_data]
         m.register_uri("GET", "https://api.stripe.com/v1/customers", text=json.dumps(stripe_response_part1))
         m.register_uri("GET", "https://api.stripe.com/v1/customers?starting_after=cus_xyz", [
             {"text": "", "status_code": 500},  # make sure the command will try again
-            {"text": json.dumps(stripe_response_part2), "status_code": "200"}
+            {"text": json.dumps(stripe_response_part2), "status_code": 200}
         ])
         call_command("refresh_customers")
         self.active_customer.refresh_from_db()