diff --git a/requirements_dev.txt b/requirements_dev.txt
index 088eb4f..66c9fb7 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@ pip==9.0.3
 bumpversion==0.5.3
 wheel==0.31.0
 tox==2.9.1
-flake8==3.5.0
+flake8==3.7.5
 Sphinx==1.7.2
 coverage==4.5.1
 PyYAML==3.12