diff --git a/.travis.yml b/.travis.yml
index 37868b3db..7d6d2bd07 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,7 +26,7 @@ cache:
 env:
   global:
     # If changing this number, please also change it in `tests/conftest.py`.
-    - STRIPE_MOCK_VERSION=0.95.0
+    - STRIPE_MOCK_VERSION=0.98.0
 
 before_install:
   # Unpack and start stripe-mock so that the test suite can talk to it
diff --git a/tests/api_resources/issuing/test_dispute.py b/tests/api_resources/issuing/test_dispute.py
index fb0a459d8..54e986080 100644
--- a/tests/api_resources/issuing/test_dispute.py
+++ b/tests/api_resources/issuing/test_dispute.py
@@ -8,7 +8,7 @@
 
 class TestDispute(object):
     def test_is_creatable(self, request_mock):
-        resource = stripe.issuing.Dispute.create()
+        resource = stripe.issuing.Dispute.create(transaction="ipi_123")
         request_mock.assert_requested("post", "/v1/issuing/disputes")
         assert isinstance(resource, stripe.issuing.Dispute)
 
@@ -31,3 +31,10 @@ def test_is_retrievable(self, request_mock):
             "get", "/v1/issuing/disputes/%s" % TEST_RESOURCE_ID
         )
         assert isinstance(resource, stripe.issuing.Dispute)
+
+    def test_is_submittable(self, request_mock):
+        resource = stripe.issuing.Dispute.submit(TEST_RESOURCE_ID)
+        request_mock.assert_requested(
+            "post", "/v1/issuing/disputes/%s/submit" % TEST_RESOURCE_ID
+        )
+        assert isinstance(resource, stripe.issuing.Dispute)
diff --git a/tests/api_resources/test_list_object.py b/tests/api_resources/test_list_object.py
index ce5e1bb87..a6cfe489c 100644
--- a/tests/api_resources/test_list_object.py
+++ b/tests/api_resources/test_list_object.py
@@ -49,17 +49,10 @@ def test_create(self, request_mock, list_object):
     def test_create_maintains_list_properties(self, request_mock, list_object):
         # Testing with real requests because our mock makes it impossible to
         # test otherwise
-        customer = stripe.Customer.retrieve(
-            "cus_123", api_key="sk_test_custom"
-        )
-
-        res = customer.sources.create(source="tok_123")
-
+        charge = stripe.Charge.retrieve("ch_123", api_key="sk_test_custom")
+        res = charge.refunds.create(amount=123)
         request_mock.assert_requested(
-            "post",
-            "/v1/customers/cus_123/sources",
-            {"source": "tok_123"},
-            None,
+            "post", "/v1/charges/ch_123/refunds", {"amount": 123}, None,
         )
         assert res.api_key == "sk_test_custom"
 
diff --git a/tests/conftest.py b/tests/conftest.py
index a91925f49..7829f45ff 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 = "0.95.0"
+MOCK_MINIMUM_VERSION = "0.98.0"
 
 # Starts stripe-mock if an OpenAPI spec override is found in `openapi/`, and
 # otherwise fall back to `STRIPE_MOCK_PORT` or 12111.