diff --git a/pyproject.toml b/pyproject.toml
index 6104c005..5d03b035 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ PyYAML = "^6.0"
 [tool.poetry.dev-dependencies]
 black = "^21.6b0"
 isort = "^5.9.2"
-flake8 = "^3.9.2"
+flake8 = "^6.0.0"
 mypy = "^1.0.0"
 autoflake = "=1.7.8"
 pre-commit = "^3.0.0"