diff --git a/pyproject.toml b/pyproject.toml
index 7f4eef5..b082e2f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ aioschedule = "^0.5.2"
 python-multipart = "^0.0.6"
 
 [tool.poetry.dev-dependencies]
-flake8 = "^5.0.4"
+flake8 = "^6.0.0"
 flake8-import-order = "^0.18.1"
 flake8-docstrings = "^1.6.0"
 flake8-builtins = "^2.0.1"