diff --git a/reference-apps/fastapi-api-first/requirements.txt b/reference-apps/fastapi-api-first/requirements.txt
index d05c383..ed79bba 100644
--- a/reference-apps/fastapi-api-first/requirements.txt
+++ b/reference-apps/fastapi-api-first/requirements.txt
@@ -4,7 +4,7 @@
 # Core FastAPI dependencies
 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