diff --git a/pkgs/development/python-modules/drf-spectacular/default.nix b/pkgs/development/python-modules/drf-spectacular/default.nix
index cb9adc54051d..546e672dd938 100644
--- a/pkgs/development/python-modules/drf-spectacular/default.nix
+++ b/pkgs/development/python-modules/drf-spectacular/default.nix
@@ -93,6 +93,8 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "drf_spectacular" ];
 
+  optional-dependencies.sidecar = [ drf-spectacular-sidecar ];
+
   meta = with lib; {
     description = "Sane and flexible OpenAPI 3 schema generation for Django REST framework";
     homepage = "https://github.com/tfranzel/drf-spectacular";