diff --git a/pyproject.toml b/pyproject.toml
index ef265a2..725d90a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ ruff = ">=0.2,<0.4"
 [tool.poetry.group.tests.dependencies]
 coverage = { extras = ["toml"], version = "^7.4.1" }
 pytest = "^7.4.4"
-pytest-cov = "^4.1.0"
+pytest-cov = ">=4.1,<6.0"
 pytest-httpx = "0.22.0"
 pytest-watcher = "^0.4.1"