diff --git a/pyproject.toml b/pyproject.toml
index b5d4378..1a62226 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -124,7 +124,7 @@ scientific = [
 ]
 test = [
   "pytest<9",
-  "pytest-cov<5",
+  "pytest-cov<6",
   "pytest-timeout<3",
 ]
 [project.urls]