@@ -36,6 +36,7 @@
     'cloudformation.update-stack.stack-policy-url',
     'cloudformation.set-stack-policy.stack-policy-url',
 
+    'cloudformation.update-stack.stack-policy-during-update-url',
     # We will want to change the event name to ``s3`` as opposed to
     # custom in the near future along with ``s3`` to ``s3api``.
     'custom.cp.website-redirect',
 
@@ -0,0 +1,28 @@
+# Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"). You
+# may not use this file except in compliance with the License. A copy of
+# the License is located at
+#
+#     http://aws.amazon.com/apache2.0/
+#
+# or in the "license" file accompanying this file. This file is
+# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
+# ANY KIND, either express or implied. See the License for the specific
+# language governing permissions and limitations under the License.
+from awscli.testutils import BaseAWSCommandParamsTest
+
+
+class TestUpdateStack(BaseAWSCommandParamsTest):
+
+    prefix = 'cloudformation update-stack'
+
+    def test_stack_policy_during_update_url(self):
+        cmdline = self.prefix
+        cmdline += ' --stack-name test-stack '
+        cmdline += '--stack-policy-during-update-url http://foo'
+        result = {
+            'StackName': 'test-stack',
+            'StackPolicyDuringUpdateURL': 'http://foo'
+        }
+        self.assert_params_for_cmd(cmdline, result)