diff --git a/pyproject.toml b/pyproject.toml
index eacb370..1dd7e53 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ pydantic = ">=1.9.0,<3.0.0"
 
 [tool.poetry.group.dev.dependencies]
 pytest = ">=7.1.2,<9.0.0"
-pytest-cov = ">=3,<5"
+pytest-cov = ">=3,<6"
 tox = ">=3.26,<5.0"
 ruff = ">=0.2.0,<0.4.0"
 pyright = ">=1.1.350,<1.2"