diff --git a/pyproject.toml b/pyproject.toml
index 296b40130..e459fb274 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ sphinxcontrib-spelling = "^7.3.0"
 toml = "^0.10.2"
 sphinx-rtd-theme = "^1.0.0"
 sphinx-automodapi = "^0.14"
-pytest-cov = "^3.0.0"
+pytest-cov = "^4.0.0"
 pytest-asyncio = "^0.19.0"
 openapi-parser = "^0.2.6"
 autopep8 = "^1.6.0"