diff --git a/requirements-dev.txt b/requirements-dev.txt
index c51f25c..19f1699 100755
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 docutils==0.13.1
-flake8==3.3.0
+flake8==3.4.1
 ipdb==0.10.3
 mypy==0.510
 pylint==1.7.1