diff --git a/backend/requirements.txt b/backend/requirements.txt
index 2f26c2bf..297e392d 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -17,7 +17,7 @@ peewee
 bcrypt
 
 litellm
-argon2
+argon2-cffi
 apscheduler
 google-generativeai