diff --git a/requirements/requirements.txt b/requirements/requirements.txt
index 90e98e4f5b..f1f569d647 100644
--- a/requirements/requirements.txt
+++ b/requirements/requirements.txt
@@ -6,4 +6,4 @@ cvxpy == 1.1.18
 pytest == 6.2.5 # For unit test
 pytest-xdist == 2.5.0 # For unit test
 mypy == 0.931 # For unit test
-flake8 == 4.0.1 # For unit test
+flake8 == 6.0.0 # For unit test