diff --git a/pyproject.toml b/pyproject.toml
index cd3de06..043b911 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -46,7 +46,7 @@ dev = [
     "ruff >=0.1.9",
     "mypy ~=1.8.0",
     "pytest ~=7.4.3",
-    "pytest-cov ~=4.1.0",
+    "pytest-cov >=4.1,<5.1",
     "types-PyYAML ~=6.0.0",
 ]