diff --git a/app/backend/requirements.txt b/app/backend/requirements.txt
index 5712aae47e..d30d2fe0ad 100644
--- a/app/backend/requirements.txt
+++ b/app/backend/requirements.txt
@@ -338,7 +338,7 @@ pillow==10.4.0
     # via
     #   -r requirements.in
     #   openai-messages-token-helper
-portalocker==2.10.1
+portalocker==3.1.1
     # via msal-extensions
 priority==2.0.0
     # via hypercorn