diff --git a/src/backend/requirements.txt b/src/backend/requirements.txt
index f7c76310..b000572a 100644
--- a/src/backend/requirements.txt
+++ b/src/backend/requirements.txt
@@ -275,7 +275,7 @@ sqlalchemy==2.0.36
     # via fastapi-app (pyproject.toml)
 starlette==0.41.3
     # via fastapi
-tiktoken==0.7.0
+tiktoken==0.9.0
     # via opentelemetry-instrumentation-openai
 tqdm==4.67.1
     # via openai