diff --git a/.travis.yml b/.travis.yml
index 4075b4230..bc4b34d2b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,7 +25,7 @@ cache:
 env:
   global:
     # If changing this number, please also change it in `tests/conftest.py`.
-    - STRIPE_MOCK_VERSION=0.57.0
+    - STRIPE_MOCK_VERSION=0.58.0
 
 before_install:
   # Unpack and start stripe-mock so that the test suite can talk to it
diff --git a/stripe/api_resources/__init__.py b/stripe/api_resources/__init__.py
index ff3a1cae3..3078b5b94 100644
--- a/stripe/api_resources/__init__.py
+++ b/stripe/api_resources/__init__.py
@@ -29,6 +29,9 @@
 from stripe.api_resources.coupon import Coupon
 from stripe.api_resources.credit_note import CreditNote
 from stripe.api_resources.customer import Customer
+from stripe.api_resources.customer_balance_transaction import (
+    CustomerBalanceTransaction,
+)
 from stripe.api_resources.dispute import Dispute
 from stripe.api_resources.ephemeral_key import EphemeralKey
 from stripe.api_resources.event import Event
diff --git a/stripe/api_resources/customer.py b/stripe/api_resources/customer.py
index 76f5db86e..f843876dc 100644
--- a/stripe/api_resources/customer.py
+++ b/stripe/api_resources/customer.py
@@ -16,6 +16,9 @@
 @nested_resource_class_methods(
     "tax_id", operations=["create", "retrieve", "delete", "list"]
 )
+@nested_resource_class_methods(
+    "balance_transaction", operations=["create", "retrieve", "update", "list"]
+)
 class Customer(
     CreateableAPIResource,
     DeletableAPIResource,
diff --git a/stripe/api_resources/customer_balance_transaction.py b/stripe/api_resources/customer_balance_transaction.py
new file mode 100644
index 000000000..a3625764a
--- /dev/null
+++ b/stripe/api_resources/customer_balance_transaction.py
@@ -0,0 +1,25 @@
+from __future__ import absolute_import, division, print_function
+
+from stripe import util
+from stripe.api_resources.customer import Customer
+from stripe.api_resources.abstract import APIResource
+from stripe.six.moves.urllib.parse import quote_plus
+
+
+class CustomerBalanceTransaction(APIResource):
+    OBJECT_NAME = "customer_balance_transaction"
+
+    def instance_url(self):
+        token = util.utf8(self.id)
+        customer = util.utf8(self.customer)
+        base = Customer.class_url()
+        cust_extn = quote_plus(customer)
+        extn = quote_plus(token)
+        return "%s/%s/balance_transactions/%s" % (base, cust_extn, extn)
+
+    @classmethod
+    def retrieve(cls, id, api_key=None, **params):
+        raise NotImplementedError(
+            "Can't retrieve a Customer Balance Transaction without a Customer ID. "
+            "Use Customer.retrieve_customer_balance_transaction('cus_123', 'cbtxn_123')"
+        )
diff --git a/tests/api_resources/test_customer.py b/tests/api_resources/test_customer.py
index 0450845f1..f9f879d51 100644
--- a/tests/api_resources/test_customer.py
+++ b/tests/api_resources/test_customer.py
@@ -7,6 +7,7 @@
 TEST_SUB_ID = "sub_123"
 TEST_SOURCE_ID = "ba_123"
 TEST_TAX_ID_ID = "txi_123"
+TEST_TRANSACTION_ID = "cbtxn_123"
 
 
 class TestCustomer(object):
@@ -141,3 +142,30 @@ def test_is_listable(self, request_mock):
             "get", "/v1/customers/%s/tax_ids" % TEST_RESOURCE_ID
         )
         assert isinstance(resources.data, list)
+
+
+class TestCustomerTransactions(object):
+    def test_is_creatable(self, request_mock):
+        stripe.Customer.create_balance_transaction(
+            TEST_RESOURCE_ID, amount=1234, currency="usd"
+        )
+        request_mock.assert_requested(
+            "post", "/v1/customers/%s/balance_transactions" % TEST_RESOURCE_ID
+        )
+
+    def test_is_retrievable(self, request_mock):
+        stripe.Customer.retrieve_balance_transaction(
+            TEST_RESOURCE_ID, TEST_TRANSACTION_ID
+        )
+        request_mock.assert_requested(
+            "get",
+            "/v1/customers/%s/balance_transactions/%s"
+            % (TEST_RESOURCE_ID, TEST_TRANSACTION_ID),
+        )
+
+    def test_is_listable(self, request_mock):
+        resources = stripe.Customer.list_balance_transactions(TEST_RESOURCE_ID)
+        request_mock.assert_requested(
+            "get", "/v1/customers/%s/balance_transactions" % TEST_RESOURCE_ID
+        )
+        assert isinstance(resources.data, list)
diff --git a/tests/api_resources/test_customer_balance_transaction.py b/tests/api_resources/test_customer_balance_transaction.py
new file mode 100644
index 000000000..eeaf32cb2
--- /dev/null
+++ b/tests/api_resources/test_customer_balance_transaction.py
@@ -0,0 +1,32 @@
+from __future__ import absolute_import, division, print_function
+
+import pytest
+
+import stripe
+
+
+TEST_RESOURCE_ID = "cbtxn_123"
+
+
+class TestCustomerBalanceTransaction(object):
+    def construct_resource(self):
+        tax_id_dict = {
+            "id": TEST_RESOURCE_ID,
+            "object": "customer_balance_transaction",
+            "customer": "cus_123",
+        }
+        return stripe.CustomerBalanceTransaction.construct_from(
+            tax_id_dict, stripe.api_key
+        )
+
+    def test_has_instance_url(self, request_mock):
+        resource = self.construct_resource()
+        assert (
+            resource.instance_url()
+            == "/v1/customers/cus_123/balance_transactions/%s"
+            % TEST_RESOURCE_ID
+        )
+
+    def test_is_not_retrievable(self, request_mock):
+        with pytest.raises(NotImplementedError):
+            stripe.CustomerBalanceTransaction.retrieve(TEST_RESOURCE_ID)
diff --git a/tests/conftest.py b/tests/conftest.py
index 922a5953e..28e739c55 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -16,7 +16,7 @@
 
 
 # When changing this number, don't forget to change it in `.travis.yml` too.
-MOCK_MINIMUM_VERSION = "0.57.0"
+MOCK_MINIMUM_VERSION = "0.58.0"
 
 # Starts stripe-mock if an OpenAPI spec override is found in `openapi/`, and
 # otherwise fall back to `STRIPE_MOCK_PORT` or 12111.