diff --git a/functional/test_resource_chain.py b/functional/test_resource_chain.py
index c422a26..1086e74 100644
--- a/functional/test_resource_chain.py
+++ b/functional/test_resource_chain.py
@@ -116,6 +116,25 @@
         found = self.list_resources(nested_id)
         self.assertEqual(expected, found)
 
+    def test_update_resources(self):
+        params = {'chain-types': 'OS::Heat::None'}
+
+        stack_id = self.stack_create(template=TEMPLATE_PARAM_DRIVEN,
+                                     parameters=params)
+
+        nested_id = self.group_nested_identifier(stack_id, 'my-chain')
+        expected = {'0': 'OS::Heat::None'}
+        found = self.list_resources(nested_id)
+        self.assertEqual(expected, found)
+
+        params = {'chain-types': 'OS::Heat::None,OS::Heat::None'}
+        self.update_stack(stack_id, template=TEMPLATE_PARAM_DRIVEN,
+                          parameters=params)
+
+        expected = {'0': 'OS::Heat::None', '1': 'OS::Heat::None'}
+        found = self.list_resources(nested_id)
+        self.assertEqual(expected, found)
+
     def test_resources_param_driven(self):
         # Setup
         params = {'chain-types':