diff --git a/requirements_dev.txt b/requirements_dev.txt
index f6413e5..fc918f2 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -16,7 +16,7 @@ watchdog==0.8.3
 pytest==3.2.1
 pytest-runner==2.11.1
 tox==2.7.0
-flake8==3.4.1
+flake8==5.0.0
 coverage==4.4.1
 Sphinx==1.6.3
 sphinxcontrib-napoleon==0.6.1