diff --git a/pkgs/by-name/ay/ayatana-indicator-datetime/package.nix b/pkgs/by-name/ay/ayatana-indicator-datetime/package.nix
index 0f7ce4b43d11..d55574c0629e 100644
--- a/pkgs/by-name/ay/ayatana-indicator-datetime/package.nix
+++ b/pkgs/by-name/ay/ayatana-indicator-datetime/package.nix
@@ -85,6 +85,7 @@ stdenv.mkDerivation (finalAttrs: {
 
   nativeCheckInputs = [
     dbus
+    dbus-test-runner
     (python3.withPackages (ps: with ps; [
       python-dbusmock
     ]))