diff --git a/dev-requirements.txt b/dev-requirements.txt
index 8a7cdfe..1d053e7 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -8,6 +8,7 @@ flake8-isort
 flake8-logging-format
 flake8-polyfill
 flake8-quotes
+flake8-pep3101
 flake8-eradicate; python_version >= "3.6"
 pep8-naming
 wheel