diff --git a/requirements-dev.txt b/requirements-dev.txt
index b9051c7..c415f73 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -14,7 +14,7 @@ flake8==3.3.0
 isort==4.2.5
 jinja2==2.9.5 # via sphinx
 markupsafe==0.23          # via jinja2
-mccabe==0.5.3
+mccabe==0.6.1
 pydocstyle==1.1.1
 pep8-naming==0.4.1
 pep8==1.7.0               # via flake8