diff --git a/pyproject.toml b/pyproject.toml
index 756edc8..1527c04 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ dependencies = []
 [project.optional-dependencies]
 dev = [
     "jsonschema>=4.23,<5",
-    "pytest>=8,<9",
+    "pytest>=8,<10",
 ]
 
 [tool.pytest.ini_options]