Connections started failing with snowflake.connector.errors.OperationalError: 250003: Failed to execute request right after requests 2.24.0 shipped, because the connector was not yet compatible with it. The maintainer confirmed the connector did not support requests 2.24.0 at the time. Pin requests back: pip install 'requests==2.23.0'. Longer term, upgrade to snowflake-connector-python v2.3.8 or newer, which vendors requests and urllib3 so the environment's requests version no longer matters.