diff --git a/pkgs/by-name/op/open-webui/package.nix b/pkgs/by-name/op/open-webui/package.nix
index 7f00dfbcb47c..a4948115aa34 100644
--- a/pkgs/by-name/op/open-webui/package.nix
+++ b/pkgs/by-name/op/open-webui/package.nix
@@ -94,6 +94,7 @@ python3.pkgs.buildPythonApplication rec {
     peewee
     peewee-migrate
     psycopg2
+    pydub
     pyjwt
     pymysql
     pypandoc