diff --git a/pkgs/development/python-modules/pytradfri/default.nix b/pkgs/development/python-modules/pytradfri/default.nix
index e1c74b084613..70f9acd0380f 100644
--- a/pkgs/development/python-modules/pytradfri/default.nix
+++ b/pkgs/development/python-modules/pytradfri/default.nix
@@ -21,14 +21,17 @@ buildPythonPackage rec {
     hash = "sha256-12ol+2CnoPfkxmDGJJAkoafHGpQuWC4lh0N7lSvx2DE=";
   };
 
-  propagatedBuildInputs = [
-    aiocoap
-    dtlssocket
-  ];
+  passthru.extras-require = {
+    async = [
+      aiocoap
+      dtlssocket
+    ];
+  };
 
   checkInputs = [
     pytestCheckHook
-  ];
+  ]
+  ++ passthru.extras-require.async;
 
   pythonImportsCheck = [
     "pytradfri"