diff --git a/pkgs/by-name/op/open-webui/package.nix b/pkgs/by-name/op/open-webui/package.nix
index 22de3691cbd3..81c92999201b 100644
--- a/pkgs/by-name/op/open-webui/package.nix
+++ b/pkgs/by-name/op/open-webui/package.nix
@@ -7,19 +7,19 @@
 }:
 let
   pname = "open-webui";
-  version = "0.3.8";
+  version = "0.3.9";
 
   src = fetchFromGitHub {
     owner = "open-webui";
     repo = "open-webui";
     rev = "v${version}";
-    hash = "sha256-kUdy8zSt8RvGlMKa0gxp0tnZbo7/igDeFV2zsel5LXA=";
+    hash = "sha256-mDxKjJfyOwTfDQ2khZihT3S2J5qUpW/cNU00rK2tplA=";
   };
 
   frontend = buildNpmPackage {
     inherit pname version src;
 
-    npmDepsHash = "sha256-sjQJn94GmSdOY1B2bmFTsxjLrc7LSBgDpWNrXIHunsg=";
+    npmDepsHash = "sha256-+sZ8tknOvJ5odDupdxdFghhG924R9JFZ+m/rJZYyILc=";
 
     # Disabling `pyodide:fetch` as it downloads packages during `buildPhase`
     # Until this is solved, running python packages from the browser will not work.
@@ -95,6 +95,7 @@ python3.pkgs.buildPythonApplication rec {
     passlib
     peewee
     peewee-migrate
+    psutil
     psycopg2
     pydub
     pyjwt
@@ -114,6 +115,7 @@ python3.pkgs.buildPythonApplication rec {
     requests
     sentence-transformers
     sqlalchemy
+    tiktoken
     unstructured
     uvicorn
     validators