The version 4 of Pylint/astroid is released, this change should be reverted: https://github.com/prospector-dev/prospector/pull/721/files#diff-1305e9f47ced4edcf42e847bc4222761149e43b7c8dd4bf25406bc93907e2559L28-R29 Required patch: https://github.com/pylint-dev/astroid/pull/2685