diff --git a/backend/pyproject.toml b/backend/pyproject.toml
index ff69ae1..de54ed2 100644
--- a/backend/pyproject.toml
+++ b/backend/pyproject.toml
@@ -3,7 +3,7 @@ name = "markos-agentflow-backend"
 version = "0.1.0"
 description = "MarkOS-AgentFlow Backend Service"
 dependencies = [
-    "fastapi>=0.100.0",
+    "fastapi>=0.135.3",
     "uvicorn[standard]>=0.22.0",
     "pydantic-settings>=2.0.0",
     "sqlmodel>=0.0.14",