diff --git a/pyproject.toml b/pyproject.toml
index 0c81c1bd5..242583093 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -33,7 +33,7 @@ dev = [
     "myst-parser",
     "pre-commit",
     "pytest",
-    "pytest-cov >= 4.0,< 5.1",
+    "pytest-cov >= 4.0,< 6.1",
     "pytest-mock",
     "pytest-snapshot",
     "sphinx",