diff --git a/pyproject.toml b/pyproject.toml
index 5ed4e77..0f141c2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -50,7 +50,7 @@ markdown = ["matplotlib"]
 tests = [
   "pytest>=7.2.0,<9.0",
   "pytest-sugar>=0.9.6,<2.0",
-  "pytest-cov>=3.0.0,<6.0",
+  "pytest-cov>=3.0.0,<7.0",
   "pytest-mock>=3.8.2,<4.0",
   "dvclive[image,plots,markdown]",
   "ipython",