diff --git a/plivo/resources/calls.py b/plivo/resources/calls.py
index 55d3972e..a8dd6b1d 100644
--- a/plivo/resources/calls.py
+++ b/plivo/resources/calls.py
@@ -176,6 +176,7 @@ class Calls(PlivoResourceInterface):
         ],
         callback_url=[optional(is_url())],
         callback_method=[optional(of_type(six.text_type))],
+        retry_on=[optional(of_type(six.text_type))],
     )
     def create(self,
                from_,
@@ -202,7 +203,8 @@ def create(self,
                parent_call_uuid=None,
                error_if_parent_not_found=False,
                callback_url=None,
-               callback_method=None):
+               callback_method=None,
+               retry_on=None):
         if from_ in to_.split('<'):
             raise ValidationError('src and destination cannot overlap')
         return self.client.request('POST', ('Call',), to_param_dict(self.create, locals()), is_voice_request=True)
diff --git a/tests/resources/test_calls.py b/tests/resources/test_calls.py
index 043afbf9..d1da1d6e 100644
--- a/tests/resources/test_calls.py
+++ b/tests/resources/test_calls.py
@@ -1,5 +1,7 @@
 # -*- coding: utf-8 -*-
 
+import json
+
 from tests.base import PlivoResourceTestCase
 from tests.decorators import with_response
 
@@ -19,6 +21,19 @@ def test_create(self):
         self.assertUrlEqual(
             self.get_voice_url('Call'), self.client.current_request.url)
 
+    @with_response(201, method_name='create')
+    def test_create_with_retry_on(self):
+        self.client.calls.create(
+            from_='1231231230',
+            to_='3213213210',
+            answer_url='http://www.example.com',
+            retry_on='busy_line,no_answer')
+        self.assertEqual(self.client.current_request.method, 'POST')
+        self.assertUrlEqual(
+            self.get_voice_url('Call'), self.client.current_request.url)
+        request_body = json.loads(self.client.current_request.body)
+        self.assertEqual('busy_line,no_answer', request_body['retry_on'])
+
     @with_response(200)
     def test_list(self):
         self.client.calls.list()