diff --git a/pyproject.toml b/pyproject.toml
index 3a67d66..4243742 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dev = [
   "mypy>=1.11,<2",
   "pip-audit>=2.9,<3",
   "jsonschema>=4.23,<5",
-  "pytest>=8,<9",
+  "pytest>=8,<10",
   "pytest-cov>=5,<7",
   "ruff>=0.8,<1",
   "twine>=5,<7",