diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4afab8f..b6c4662 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,4 +1,4 @@
-flake8==3.3.0
+flake8==3.7.9
 mccabe==0.6.1
 pycodestyle==2.3.1
 pyflakes==1.5.0