diff --git a/pyproject.toml b/pyproject.toml
index 09d4f156..f302e193 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ xgboost="0.90"
 matplotlib="3.1.1"
 wget="3.2"
 pandas="0.25.3"
-flake8="3.7.9"
+flake8="7.0.0"
 sphinx = "^2.2"
 sphinx-rtd-theme = "0.5.0"
 recommonmark = "0.6.0"