diff --git a/reference-apps/fastapi/requirements.txt b/reference-apps/fastapi/requirements.txt
index 233fae3..c14da25 100644
--- a/reference-apps/fastapi/requirements.txt
+++ b/reference-apps/fastapi/requirements.txt
@@ -1,6 +1,6 @@
 fastapi==0.128.0
 uvicorn[standard]==0.40.0
-pydantic-settings==2.12.0
+pydantic-settings==2.13.0
 slowapi==0.1.9  # Rate limiting
 pybreaker==1.4.1  # Circuit breaker