diff --git a/ch6/microservices/lanarky/requirements.txt b/ch6/microservices/lanarky/requirements.txt
index b839459..a564996 100644
--- a/ch6/microservices/lanarky/requirements.txt
+++ b/ch6/microservices/lanarky/requirements.txt
@@ -5,7 +5,7 @@ aiosignal==1.3.1
 anyio==3.7.1
 attrs==23.2.0
 dataclasses-json==0.6.4
-fastapi==0.103.2
+fastapi==0.109.1
 frozenlist==1.4.1
 greenlet==3.0.3
 jsonpatch==1.33