diff --git a/pkgs/development/python-modules/duckduckgo-search/default.nix b/pkgs/development/python-modules/duckduckgo-search/default.nix
index cb09514920f6..a06c16586b0a 100644
--- a/pkgs/development/python-modules/duckduckgo-search/default.nix
+++ b/pkgs/development/python-modules/duckduckgo-search/default.nix
@@ -7,7 +7,12 @@
   setuptools,
   orjson,
   curl-cffi,
+
+  # To build orjson
   rustPlatform,
+
+  # Optional dependencies
+  lxml,
 }:
 let
   curl-cffi_0_7_0 = curl-cffi.overrideAttrs (
@@ -61,6 +66,10 @@ buildPythonPackage rec {
     curl-cffi_0_7_0
   ];
 
+  passthru.optional-dependencies = {
+    lxml = [ lxml ];
+  };
+
   doCheck = false; # tests require network access
 
   pythonImportsCheck = [ "duckduckgo_search" ];