diff --git a/pyproject.toml b/pyproject.toml
index 90086ab..6e30f22 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ python = "^3.6.1"
 [tool.poetry.dev-dependencies]
 tox = "^3.15"
 pytest = "^6.0"
-pytest-cov = "^2.9"
+pytest-cov = "^4.0"
 coverage = {version = "^5.1", extras = ["toml"]}
 coverage2clover = "^2.0"
 wemake-python-styleguide = "^0.15.1"