diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 093f719..86d2a41 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
 dev = [
   "httpx>=0.28,<1.0",
   "pip-licenses>=5.5,<6.0",
-  "pytest>=8.3,<9.0",
+  "pytest>=8.3,<10.0",
   "ruff>=0.11,<1.0",
 ]