diff --git a/reference-apps/fastapi/requirements.txt b/reference-apps/fastapi/requirements.txt
index aef2663..b4bd9de 100644
--- a/reference-apps/fastapi/requirements.txt
+++ b/reference-apps/fastapi/requirements.txt
@@ -1,6 +1,6 @@
 fastapi==0.121.1
 uvicorn[standard]==0.38.0
-pydantic-settings==2.1.0
+pydantic-settings==2.12.0
 slowapi==0.1.9  # Rate limiting
 pybreaker==1.0.1  # Circuit breaker