diff --git a/requirements-dev.txt b/requirements-dev.txt
index ade0fba..b85e5ee 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -7,7 +7,7 @@ flake8==3.9.2
 hypothesis==6.23.3
 isort==5.9.3
 pre-commit==2.13.0
-pytest-cov==2.12.1
+pytest-cov==4.0.0
 pytest==6.2.4
 setuptools==57.4.0
 twine==3.4.2