diff --git a/pyproject.toml b/pyproject.toml
index 81315db..635c59a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-  "pytest>=8.4.1,<9.0.0",
+  "pytest>=8.4.1,<10.0.0",
   "pytest-asyncio>=1.1.0,<2.0.0",
   "httpx>=0.28.1,<1.0.0",
   "ruff>=0.12.5,<1.0.0",