BREAKING CHANGES ================ Version 4.0.0 ------------- - Drops python 3.6 support - Removed config key `AUTH_STRICT_RESPONSE_CODES`, it's always strict now. - Major version bumps on following packages **Flask from 1.X to 2.X** Breaking changes: https://flask.palletsprojects.com/en/2.0.x/changes/#version-2-0-0 **flask-jwt-extended 3.X to 4.X:** Breaking changes: https://flask-jwt-extended.readthedocs.io/en/stable/v4_upgrade_guide/ **Jinja2 2.X to 3.X** Breaking changes: https://jinja.palletsprojects.com/en/3.0.x/changes/#version-3-0-0 **Werkzeug 1.X to 2.X** https://werkzeug.palletsprojects.com/en/2.0.x/changes/#version-2-0-0 The following packages are probably not impactful to you: **pyJWT 1.X to 2.X:** Breaking changes: https://pyjwt.readthedocs.io/en/stable/changelog.html#v2-0-0 **Click 7.X to 8.X:** Breaking changes: https://click.palletsprojects.com/en/8.0.x/changes/#version-8-0-0 **itsdangerous 1.X to 2.X** Breaking changes: https://github.com/pallets/itsdangerous/blob/main/CHANGES.rst#version-200 Version 3.0.0 (OAuth) --------------------- Major version 3, changed it's **OAuth** dependency from flask-oauth to authlib, due to this OAuth configuration changed: Before: .. code-block:: OAUTH_PROVIDERS = [ {'name':'google', 'icon':'fa-google', 'token_key':'access_token', 'remote_app': { 'consumer_key':'GOOGLE KEY', 'consumer_secret':'GOOGLE SECRET', 'base_url':'https://www.googleapis.com/oauth2/v2/', 'request_token_params':{ 'scope': 'email profile' }, 'request_token_url':None, 'access_token_url':'https://accounts.google.com/o/oauth2/token', 'authorize_url':'https://accounts.google.com/o/oauth2/auth'} } ] Now: .. code-block:: OAUTH_PROVIDERS = [ {'name':'google', 'icon':'fa-google', 'token_key':'access_token', 'remote_app': { 'client_id':'GOOGLE KEY', 'client_secret':'GOOGLE SECRET', 'api_base_url':'https://www.googleapis.com/oauth2/v2/', 'client_kwargs':{ 'scope': 'email profile' }, 'request_token_url':None, 'access_token_url':'https://accounts.google.com/o/oauth2/token', 'authorize_url':'https://accounts.google.com/o/oauth2/auth'} } ] Also make sure you change your dependency for flask-oauth to `authlib `_