diff --git a/pyproject.toml b/pyproject.toml
index 4d36e73..47e1487 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ tox = "^4.11.4"
 
 [tool.poetry.group.test.dependencies]
 pytest = "^7.1.2"
-pytest-cov = "^4.0.0"
+pytest-cov = ">=4,<6"
 
 
 [tool.poetry.group.test-flake8.dependencies]