diff --git a/test-requirements.txt b/test-requirements.txt
index 658ece9..47bd08f 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,6 +1,6 @@
 -r requirements.txt
 pyflakes==2.2.0
-flake8==3.8.3
+flake8==6.1.0
 pylint==2.5.3
 pytype==2020.7.20
 git+https://github.com/faucetsdn/faucet