diff --git a/pyproject.toml b/pyproject.toml
index b026603..fef7198 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ pytest-cov = ">=4,<6"
 
 
 [tool.poetry.group.test-flake8.dependencies]
-flake8 = "^4.0"
+flake8 = ">=4,<8"
 flake8-bugbear = ">=22.3,<24.0"
 flake8-docstrings = "^1.6"
 flake8-typing-imports = "^1.12"