diff --git a/pkgs/by-name/op/open-webui/package.nix b/pkgs/by-name/op/open-webui/package.nix
index 903aeba2c55b..c39ee38a5062 100644
--- a/pkgs/by-name/op/open-webui/package.nix
+++ b/pkgs/by-name/op/open-webui/package.nix
@@ -127,6 +127,7 @@ python3Packages.buildPythonApplication rec {
       googleapis-common-protos
       httpx
       iso-639
+      itsdangerous
       langchain
       langchain-community
       langdetect