diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index 86d2a41..795bb0f 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -10,7 +10,7 @@ license = "MIT"
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
-  "fastapi>=0.115,<1.0",
+  "fastapi>=0.135.3,<1.0",
   "numpy>=2.1,<3.0",
   "opencv-python-headless>=4.10,<5.0",
   "pydantic-settings>=2.6,<3.0",