diff --git a/pkgs/by-name/op/open-webui/package.nix b/pkgs/by-name/op/open-webui/package.nix
index 3523f578d8d1..d2164ff8c261 100644
--- a/pkgs/by-name/op/open-webui/package.nix
+++ b/pkgs/by-name/op/open-webui/package.nix
@@ -92,9 +92,11 @@ python312.pkgs.buildPythonApplication rec {
     ftfy
     google-generativeai
     googleapis-common-protos
+    iso-639
     langchain
     langchain-chroma
     langchain-community
+    langdetect
     langfuse
     ldap3
     markdown