diff --git a/incognia/api.py b/incognia/api.py
index 2d97d22..8814d60 100644
--- a/incognia/api.py
+++ b/incognia/api.py
@@ -26,7 +26,8 @@ def register_new_signup(self,
                             address_coordinates: Optional[Coordinates] = None,
                             external_id: Optional[str] = None,
                             policy_id: Optional[str] = None,
-                            account_id: Optional[str] = None) -> dict:
+                            account_id: Optional[str] = None,
+                            request_token: Optional[str] = None) -> dict:
         if not installation_id:
             raise IncogniaError('installation_id is required.')
 
@@ -40,7 +41,8 @@ def register_new_signup(self,
                 'address_coordinates': address_coordinates,
                 'external_id': external_id,
                 'policy_id': policy_id,
-                'account_id': account_id
+                'account_id': account_id,
+                'request_token': request_token
             }
             data = encode(body)
             return self.__request.post(Endpoints.SIGNUPS, headers=headers, data=data)
@@ -104,7 +106,8 @@ def register_payment(self,
                          payment_value: Optional[PaymentValue] = None,
                          payment_methods: Optional[List[PaymentMethod]] = None,
                          evaluate: Optional[bool] = None,
-                         policy_id: Optional[str] = None) -> dict:
+                         policy_id: Optional[str] = None,
+                         request_token: Optional[str] = None) -> dict:
         if not installation_id:
             raise IncogniaError('installation_id is required.')
         if not account_id:
@@ -122,7 +125,8 @@ def register_payment(self,
                 'addresses': addresses,
                 'payment_value': payment_value,
                 'payment_methods': payment_methods,
-                'policy_id': policy_id
+                'policy_id': policy_id,
+                'request_token': request_token
             }
             data = encode(body)
             return self.__request.post(Endpoints.TRANSACTIONS, headers=headers, params=params,
@@ -136,7 +140,8 @@ def register_login(self,
                        account_id: str,
                        external_id: Optional[str] = None,
                        evaluate: Optional[bool] = None,
-                       policy_id: Optional[str] = None) -> dict:
+                       policy_id: Optional[str] = None,
+                       request_token: Optional[str] = None) -> dict:
         if not installation_id:
             raise IncogniaError('installation_id is required.')
         if not account_id:
@@ -151,7 +156,8 @@ def register_login(self,
                 'installation_id': installation_id,
                 'account_id': account_id,
                 'external_id': external_id,
-                'policy_id': policy_id
+                'policy_id': policy_id,
+                'request_token': request_token
             }
             data = encode(body)
             return self.__request.post(Endpoints.TRANSACTIONS, headers=headers, params=params,
@@ -165,7 +171,8 @@ def register_web_login(self,
                            account_id: str,
                            external_id: Optional[str] = None,
                            evaluate: Optional[bool] = None,
-                           policy_id: Optional[str] = None) -> dict:
+                           policy_id: Optional[str] = None,
+                           request_token: Optional[str] = None) -> dict:
         if not session_token:
             raise IncogniaError('session_token is required.')
         if not account_id:
@@ -180,7 +187,8 @@ def register_web_login(self,
                 'session_token': session_token,
                 'account_id': account_id,
                 'external_id': external_id,
-                'policy_id': policy_id
+                'policy_id': policy_id,
+                'request_token': request_token
             }
             data = encode(body)
             return self.__request.post(Endpoints.TRANSACTIONS, headers=headers, params=params,
diff --git a/tests/test_api.py b/tests/test_api.py
index 8cdcfd0..a7952cd 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -66,7 +66,8 @@ class TestIncogniaAPI(TestCase):
         'address_coordinates': ADDRESS_COORDINATES,
         'external_id': f'{EXTERNAL_ID}',
         'policy_id': f'{POLICY_ID}',
-        'account_id': f'{ACCOUNT_ID}'
+        'account_id': f'{ACCOUNT_ID}',
+        'request_token': f'{REQUEST_TOKEN}'
     })
     OK_STATUS_CODE: Final[int] = 200
     CLIENT_ERROR_CODE: Final[int] = 400
@@ -101,7 +102,8 @@ class TestIncogniaAPI(TestCase):
         'type': 'payment',
         'installation_id': f'{INSTALLATION_ID}',
         'account_id': f'{ACCOUNT_ID}',
-        'policy_id': f'{POLICY_ID}'
+        'policy_id': f'{POLICY_ID}',
+        'request_token': f'{REQUEST_TOKEN}',
     })
     REGISTER_INVALID_PAYMENT_DATA: Final[bytes] = encode({
         'type': 'payment',
@@ -112,13 +114,15 @@ class TestIncogniaAPI(TestCase):
         'type': 'login',
         'installation_id': f'{INSTALLATION_ID}',
         'account_id': f'{ACCOUNT_ID}',
-        'policy_id': f'{POLICY_ID}'
+        'policy_id': f'{POLICY_ID}',
+        'request_token': f'{REQUEST_TOKEN}'
     })
     REGISTER_VALID_WEB_LOGIN_DATA: Final[bytes] = encode({
         'type': 'login',
         'session_token': f'{SESSION_TOKEN}',
         'account_id': f'{ACCOUNT_ID}',
-        'policy_id': f'{POLICY_ID}'
+        'policy_id': f'{POLICY_ID}',
+        'request_token': f'{REQUEST_TOKEN}'
     })
     REGISTER_INVALID_LOGIN_DATA: Final[bytes] = encode({
         'type': 'login',
@@ -161,7 +165,8 @@ def test_register_new_signup_when_installation_id_is_valid_should_return_full_va
                                            address_coordinates=self.ADDRESS_COORDINATES,
                                            external_id=self.EXTERNAL_ID,
                                            policy_id=self.POLICY_ID,
-                                           account_id=self.ACCOUNT_ID)
+                                           account_id=self.ACCOUNT_ID,
+                                           request_token=self.REQUEST_TOKEN)
 
         mock_token_manager_get.assert_called()
         mock_base_request_post.assert_called_with(Endpoints.SIGNUPS,
@@ -312,7 +317,8 @@ def test_register_payment_when_required_fields_are_valid_should_work(
 
         request_response = api.register_payment(self.INSTALLATION_ID,
                                                 self.ACCOUNT_ID,
-                                                policy_id=self.POLICY_ID)
+                                                policy_id=self.POLICY_ID,
+                                                request_token=self.REQUEST_TOKEN)
 
         mock_token_manager_get.assert_called()
         mock_base_request_post.assert_called_with(Endpoints.TRANSACTIONS,
@@ -374,7 +380,8 @@ def test_register_login_when_required_fields_are_valid_should_work(
 
         request_response = api.register_login(self.INSTALLATION_ID,
                                               self.ACCOUNT_ID,
-                                              policy_id=self.POLICY_ID)
+                                              policy_id=self.POLICY_ID,
+                                              request_token=self.REQUEST_TOKEN)
 
         mock_token_manager_get.assert_called()
         mock_base_request_post.assert_called_with(Endpoints.TRANSACTIONS,
@@ -436,7 +443,8 @@ def test_register_web_login_when_required_fields_are_valid_should_work(
 
         request_response = api.register_web_login(self.SESSION_TOKEN,
                                                   self.ACCOUNT_ID,
-                                                  policy_id=self.POLICY_ID)
+                                                  policy_id=self.POLICY_ID,
+                                                  request_token=self.REQUEST_TOKEN)
 
         mock_token_manager_get.assert_called()
         mock_base_request_post.assert_called_with(Endpoints.TRANSACTIONS,