diff --git a/lib/plivo/resources/calls.rb b/lib/plivo/resources/calls.rb
index b1f7080..5911b18 100644
--- a/lib/plivo/resources/calls.rb
+++ b/lib/plivo/resources/calls.rb
@@ -355,6 +355,7 @@ def initialize(client, resource_list_json = nil)
       # @option options [String] :sip_headers- List of SIP headers in the form of 'key=value' pairs, separated by commas. E.g. head1=val1,head2=val2,head3=val3,...,headN=valN. The SIP headers are always prefixed with X-PH-. The SIP headers are present for every HTTP request made by the outbound call. Only [A-Z], [a-z] and [0-9] characters are allowed for the SIP headers key and value. Additionally, the '%' character is also allowed for the SIP headers value so that you can encode this value in the URL.
       # @option options [Int] :ring_timeout - Determines the time in seconds the call should ring. If the call is not answered within the ring_timeout value or the default value of 120s, it is canceled.
       # @option options [String] :parent_call_uuid - The call_uuid of the first leg in an ongoing conference call. It is recommended to use this parameter in scenarios where a member who is already present in the conference intends to add new members by initiating outbound API calls. This minimizes the delay in adding a new memeber to the conference.
+      # @option options [String] :retry_on - Comma-separated list of failure reasons that should trigger the HA Secondary-Number Retry for this call. Valid values are busy_line, no_answer, rejected and ring_timeout. When set, it overrides the account-level retry reasons configuration.
       # @option options [Boolean] :error_parent_not_found - if set to true and the parent_call_uuid cannot be found, the API request would return an error. If set to false, the outbound call API request will be executed even if the parent_call_uuid is not found. Defaults to false.
       # @return [Call] Call
       def create(from, to, answer_url, options = nil)
diff --git a/spec/resource_calls_spec.rb b/spec/resource_calls_spec.rb
index b9981b9..5e222bc 100644
--- a/spec/resource_calls_spec.rb
+++ b/spec/resource_calls_spec.rb
@@ -106,6 +106,25 @@ def to_json_list_live(list_object)
                      })
   end
 
+  it 'creates a call with retry_on' do
+    contents = File.read(Dir.pwd + '/spec/mocks/callCreateResponse.json')
+    mock(201, JSON.parse(contents))
+    expect(JSON.parse(to_json_create(@api.calls
+                                         .create('+919090909090',
+                                                 ['+919898989898'],
+                                                 'http://www.answer.url',
+                                                 {retry_on: 'busy_line,no_answer'}))))
+      .to eql(JSON.parse(contents))
+    compare_requests(uri: '/v1/Account/MAXXXXXXXXXXXXXXXXXX/Call/',
+                     method: 'POST',
+                     data: {
+                       from: '+919090909090',
+                       to: '+919898989898',
+                       answer_url: 'http://www.answer.url',
+                       retry_on: 'busy_line,no_answer'
+                     })
+  end
+
   it 'fetches details of a call' do
     contents = File.read(Dir.pwd + '/spec/mocks/callGetResponse.json')
     mock(200, JSON.parse(contents))