diff --git a/pyproject.toml b/pyproject.toml
index dd9ce42..ccb860d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -49,7 +49,7 @@ homepage = "https://github.com/k4black/codebleu"
 [project.optional-dependencies]
 test = [
     "pytest >=7.0.0,<9.0.0",
-    "pytest-cov >=4.0.0,<5.0.0",
+    "pytest-cov >=4.0.0,<6.0.0",
     "pytest-mock >=3.0.0,<4.0.0",
     "pytest-timeout >=2.0.0,<3.0.0",
     "black ==24.3.0",