diff --git a/.travis.yml b/.travis.yml
index 7d90453d5..59d11d58d 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=0.89.0
+    - STRIPE_MOCK_VERSION=0.90.0
 
 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 af4eed158..32a514110 100644
--- a/stripe/api_resources/__init__.py
+++ b/stripe/api_resources/__init__.py
@@ -46,6 +46,7 @@
 from stripe.api_resources.invoice_item import InvoiceItem
 from stripe.api_resources.invoice_line_item import InvoiceLineItem
 from stripe.api_resources.issuer_fraud_record import IssuerFraudRecord
+from stripe.api_resources.line_item import LineItem
 from stripe.api_resources.login_link import LoginLink
 from stripe.api_resources.mandate import Mandate
 from stripe.api_resources.order import Order
diff --git a/stripe/api_resources/checkout/session.py b/stripe/api_resources/checkout/session.py
index 8a04e871c..32f8fd791 100644
--- a/stripe/api_resources/checkout/session.py
+++ b/stripe/api_resources/checkout/session.py
@@ -2,7 +2,9 @@
 
 from stripe.api_resources.abstract import CreateableAPIResource
 from stripe.api_resources.abstract import ListableAPIResource
+from stripe.api_resources.abstract import nested_resource_class_methods
 
 
+@nested_resource_class_methods("line_item", operations=["list"])
 class Session(CreateableAPIResource, ListableAPIResource):
     OBJECT_NAME = "checkout.session"
diff --git a/stripe/api_resources/line_item.py b/stripe/api_resources/line_item.py
new file mode 100644
index 000000000..f0213d48e
--- /dev/null
+++ b/stripe/api_resources/line_item.py
@@ -0,0 +1,7 @@
+from __future__ import absolute_import, division, print_function
+
+from stripe.api_resources.abstract import APIResource
+
+
+class LineItem(APIResource):
+    OBJECT_NAME = "item"
diff --git a/stripe/object_classes.py b/stripe/object_classes.py
index 2f5d4d5c4..7c8f11704 100644
--- a/stripe/object_classes.py
+++ b/stripe/object_classes.py
@@ -46,6 +46,7 @@
     api_resources.issuing.Cardholder.OBJECT_NAME: api_resources.issuing.Cardholder,
     api_resources.issuing.Dispute.OBJECT_NAME: api_resources.issuing.Dispute,
     api_resources.issuing.Transaction.OBJECT_NAME: api_resources.issuing.Transaction,
+    api_resources.LineItem.OBJECT_NAME: api_resources.LineItem,
     api_resources.LoginLink.OBJECT_NAME: api_resources.LoginLink,
     api_resources.Mandate.OBJECT_NAME: api_resources.Mandate,
     api_resources.Order.OBJECT_NAME: api_resources.Order,
diff --git a/tests/api_resources/checkout/test_session.py b/tests/api_resources/checkout/test_session.py
index 3c3f70150..ca1675c98 100644
--- a/tests/api_resources/checkout/test_session.py
+++ b/tests/api_resources/checkout/test_session.py
@@ -34,3 +34,13 @@ def test_is_retrievable(self, request_mock):
             "get", "/v1/checkout/sessions/%s" % TEST_RESOURCE_ID
         )
         assert isinstance(resource, stripe.checkout.Session)
+
+
+class TestSessionLineItems(object):
+    def test_is_listable(self, request_mock):
+        resources = stripe.checkout.Session.list_line_items(TEST_RESOURCE_ID)
+        request_mock.assert_requested(
+            "get", "/v1/checkout/sessions/%s/line_items" % TEST_RESOURCE_ID
+        )
+        assert isinstance(resources.data, list)
+        assert isinstance(resources.data[0], stripe.LineItem)
diff --git a/tests/conftest.py b/tests/conftest.py
index db39f4592..2f724f67d 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 = "0.89.0"
+MOCK_MINIMUM_VERSION = "0.90.0"
 
 # Starts stripe-mock if an OpenAPI spec override is found in `openapi/`, and
 # otherwise fall back to `STRIPE_MOCK_PORT` or 12111.