diff --git a/dev-requirements.txt b/dev-requirements.txt
index 6ea0726..b359a2b 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,7 +1,7 @@
 pytest
 pytest-cov
 mypy
-flake8==3.7.8
+flake8==3.7.9
 pep8-naming==0.8.2
 flake8-quotes==2.1.0
 flake8-import-order==0.18.1