diff --git a/pyproject.toml b/pyproject.toml
index 90d12e8..cc4969c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -20,7 +20,7 @@ dependencies = [
 [project.optional-dependencies]
 dev = [
   "mypy>=1.11,<2",
-  "pytest>=8.3,<9",
+  "pytest>=8.3,<10",
   "pytest-asyncio>=0.23,<1",
   "pytest-cov>=5,<7",
   "respx>=0.21,<1",