diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4ffe2ec..f68718f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,5 +1,5 @@
 -e .
-flake8==3.4.1
+flake8==3.5.0
 pytest==3.2.3
 pytest-cov==2.5.1
 coverage==4.4.1