diff --git a/requirements_dev.txt b/requirements_dev.txt
index 02fe5e2..b7dd2db 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@ pip==8.1.2
 bumpversion==0.5.3
 wheel==0.29.0
 watchdog==0.8.3
-flake8==3.0.4
+flake8==3.7.1
 tox==2.4.1
 coverage==4.2
 Sphinx==1.4.8