diff --git a/pkgs/by-name/vu/vunnel/package.nix b/pkgs/by-name/vu/vunnel/package.nix
index 53df74f8533c..49ca6562f59e 100644
--- a/pkgs/by-name/vu/vunnel/package.nix
+++ b/pkgs/by-name/vu/vunnel/package.nix
@@ -18,11 +18,11 @@ python3.pkgs.buildPythonApplication rec {
   };
 
   pythonRelaxDeps = [
+    "defusedxml"
     "ijson"
     "sqlalchemy"
   ];
 
-
   build-system = with python3.pkgs; [
     poetry-core
     poetry-dynamic-versioning