diff --git a/pyproject.toml b/pyproject.toml
index 0e52881..1f16119 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@ statsmodels = "^0.13.1"
 jsonschema = "^4.5.1"
 
 [tool.poetry.dev-dependencies]
-flake8 = "^5.0"
+flake8 = "^6.0"
 coverage = "^7.0"
 isort = "^5.6.3"
 black = "^22.3.0"