diff --git a/pkgs/development/python-modules/zigpy-xbee/default.nix b/pkgs/development/python-modules/zigpy-xbee/default.nix
index 7ff1921c72b9..37d64f73dca5 100644
--- a/pkgs/development/python-modules/zigpy-xbee/default.nix
+++ b/pkgs/development/python-modules/zigpy-xbee/default.nix
@@ -4,6 +4,7 @@
   fetchFromGitHub,
   pytest-asyncio,
   pytestCheckHook,
+  pyserial-asyncio-fast,
   setuptools,
   zigpy,
 }:
@@ -35,6 +36,7 @@ buildPythonPackage rec {
   nativeCheckInputs = [
     pytest-asyncio
     pytestCheckHook
+    pyserial-asyncio-fast
   ];
 
   disabledTests = [