diff --git a/teeth_agent/overlord_agent_api.py b/teeth_agent/overlord_agent_api.py
index 3f0192e8f..4d0c7f65b 100644
--- a/teeth_agent/overlord_agent_api.py
+++ b/teeth_agent/overlord_agent_api.py
@@ -41,10 +41,10 @@ class APIClient(object):
             'Accept': 'application/json',
         }
 
-        return self.session.send(method,
-                                 request_url,
-                                 headers=request_headers,
-                                 data=data)
+        return self.session.request(method,
+                                    request_url,
+                                    headers=request_headers,
+                                    data=data)
 
     def heartbeat(self, mac_addr, url, mode, version):
         path = '/{api_version}/agents/{mac_addr}'.format(
diff --git a/teeth_agent/tests/overlord_agent_api.py b/teeth_agent/tests/overlord_agent_api.py
index 62f8fafab..82669c1a4 100644
--- a/teeth_agent/tests/overlord_agent_api.py
+++ b/teeth_agent/tests/overlord_agent_api.py
@@ -36,8 +36,8 @@ class TestBaseTeethAgent(unittest.TestCase):
             'Heartbeat-Before': expected_heartbeat_before,
         })
 
-        self.api_client.session.send = mock.Mock()
-        self.api_client.session.send.return_value = response
+        self.api_client.session.request = mock.Mock()
+        self.api_client.session.request.return_value = response
 
         heartbeat_before = self.api_client.heartbeat(
             url='http://1.2.3.4:9999/',
@@ -47,18 +47,19 @@ class TestBaseTeethAgent(unittest.TestCase):
 
         self.assertEqual(heartbeat_before, expected_heartbeat_before)
 
-        send_args = self.api_client.session.send.call_args[0]
-        self.assertEqual(send_args[0], 'PUT')
-        self.assertEqual(send_args[1], API_URL + 'v1/agents/a:b:c:d')
+        request_args = self.api_client.session.request.call_args[0]
+        self.assertEqual(request_args[0], 'PUT')
+        self.assertEqual(request_args[1], API_URL + 'v1/agents/a:b:c:d')
 
-        content = json.loads(self.api_client.session.send.call_args[1]['data'])
+        data = self.api_client.session.request.call_args[1]['data']
+        content = json.loads(data)
         self.assertEqual(content['url'], 'http://1.2.3.4:9999/')
         self.assertEqual(content['mode'], 'STANDBY')
         self.assertEqual(content['version'], '15')
 
     def test_heartbeat_requests_exception(self):
-        self.api_client.session.send = mock.Mock()
-        self.api_client.session.send.side_effect = Exception('api is down!')
+        self.api_client.session.request = mock.Mock()
+        self.api_client.session.request.side_effect = Exception('api is down!')
 
         self.assertRaises(errors.HeartbeatError,
                           self.api_client.heartbeat,
@@ -69,8 +70,8 @@ class TestBaseTeethAgent(unittest.TestCase):
 
     def test_heartbeat_invalid_status_code(self):
         response = httmock.response(status_code=404)
-        self.api_client.session.send = mock.Mock()
-        self.api_client.session.send.return_value = response
+        self.api_client.session.request = mock.Mock()
+        self.api_client.session.request.return_value = response
 
         self.assertRaises(errors.HeartbeatError,
                           self.api_client.heartbeat,
@@ -81,8 +82,8 @@ class TestBaseTeethAgent(unittest.TestCase):
 
     def test_heartbeat_missing_heartbeat_before_header(self):
         response = httmock.response(status_code=204)
-        self.api_client.session.send = mock.Mock()
-        self.api_client.session.send.return_value = response
+        self.api_client.session.request = mock.Mock()
+        self.api_client.session.request.return_value = response
 
         self.assertRaises(errors.HeartbeatError,
                           self.api_client.heartbeat,
@@ -95,8 +96,8 @@ class TestBaseTeethAgent(unittest.TestCase):
         response = httmock.response(status_code=204, headers={
             'Heartbeat-Before': 'tomorrow',
         })
-        self.api_client.session.send = mock.Mock()
-        self.api_client.session.send.return_value = response
+        self.api_client.session.request = mock.Mock()
+        self.api_client.session.request.return_value = response
 
         self.assertRaises(errors.HeartbeatError,
                           self.api_client.heartbeat,