diff --git a/requirements_dev.txt b/requirements_dev.txt
index b8947f0..77349b7 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,7 +1,7 @@
 pip==20.2.3
 wheel==0.35.1
 watchdog==0.10.3
-flake8==3.8.4
+flake8==6.0.0
 Sphinx==3.2.1
 tox==3.20.1
 coverage==5.3