diff --git a/requirements-dev.txt b/requirements-dev.txt
index b21ccfb..e352937 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 -e .
-flake8==3.7.8
+flake8==3.7.9
 async-timeout==3.0.1
 pytest==5.2.2
 pytest-cov==2.8.1