diff --git a/README.md b/README.md
index d6b951f..a0ab535 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
 A powerful way to send personalized messages at scale and build effective customer engagement strategies. Learn more at onesignal.com
 
 - API version: 5.2.0
-- Package version: 5.2.0-beta1
+- Package version: 5.2.1-beta1
 - Build package: org.openapitools.codegen.languages.PythonClientCodegen
 
 ## Requirements.
diff --git a/onesignal/__init__.py b/onesignal/__init__.py
index 5261c1e..deddb8b 100644
--- a/onesignal/__init__.py
+++ b/onesignal/__init__.py
@@ -11,7 +11,7 @@
 """
 
 
-__version__ = "5.2.0-beta1"
+__version__ = "5.2.1-beta1"
 
 # import ApiClient
 from onesignal.api_client import ApiClient
diff --git a/onesignal/api_client.py b/onesignal/api_client.py
index 52c659a..3486130 100644
--- a/onesignal/api_client.py
+++ b/onesignal/api_client.py
@@ -77,7 +77,7 @@ def __init__(self, configuration=None, header_name=None, header_value=None,
             self.default_headers[header_name] = header_value
         self.cookie = cookie
         # Set default User-Agent.
-        self.user_agent = 'OpenAPI-Generator/5.2.0-beta1/python'
+        self.user_agent = 'OpenAPI-Generator/5.2.1-beta1/python'
 
     def __enter__(self):
         return self
@@ -142,7 +142,7 @@ def __call_api(
         # header parameters
         header_params = header_params or {}
         header_params.update(self.default_headers)
-        header_params['OS-Usage-Data'] = "kind=sdk, sdk-name=onesignal-python, version=5.2.0-beta1"
+        header_params['OS-Usage-Data'] = "kind=sdk, sdk-name=onesignal-python, version=5.2.1-beta1"
         if self.cookie:
             header_params['Cookie'] = self.cookie
         if header_params:
diff --git a/onesignal/configuration.py b/onesignal/configuration.py
index f850ee6..f3b84a0 100644
--- a/onesignal/configuration.py
+++ b/onesignal/configuration.py
@@ -84,8 +84,8 @@ class Configuration(object):
 
     def __init__(self, host=None,
                  api_key=None, api_key_prefix=None,
-                 app_key=None,
-                 user_key=None,
+                 rest_api_key=None,
+                 organization_api_key=None,
                  username=None, password=None,
                  discard_unknown_keys=False,
                  disabled_client_side_validations="",
@@ -110,8 +110,8 @@ def __init__(self, host=None,
         """Temp file folder for downloading files
         """
         # Authentication Settings
-        self.app_key = app_key
-        self.user_key = user_key
+        self.rest_api_key = rest_api_key
+        self.organization_api_key = organization_api_key
         self.api_key = {}
         if api_key:
             self.api_key = api_key
@@ -400,7 +400,7 @@ def to_debug_report(self):
                "OS: {env}\n"\
                "Python Version: {pyversion}\n"\
                "Version of the API: 5.2.0\n"\
-               "SDK Package Version: 5.2.0-beta1".\
+               "SDK Package Version: 5.2.1-beta1".\
                format(env=sys.platform, pyversion=sys.version)
 
     def get_host_settings(self):
diff --git a/setup.py b/setup.py
index bdfd5c6..0d11c27 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@
 from setuptools import setup, find_packages  # noqa: H301
 
 NAME = "onesignal_python_api"
-VERSION = "5.2.0-beta1"
+VERSION = "5.2.1-beta1"
 # To install the library, run the following
 #
 # python setup.py install