diff --git a/backend/requirements.txt b/backend/requirements.txt
index 41527a78c..2f26c2bf0 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -17,6 +17,7 @@ peewee
 bcrypt
 
 litellm
+argon2
 apscheduler
 google-generativeai