diff --git a/manifests/instance.pp b/manifests/instance.pp
index 90c8dde..38e048e 100644
--- a/manifests/instance.pp
+++ b/manifests/instance.pp
@@ -66,7 +66,7 @@
   Optional[String[1]]            $https_proxy           = $github_actions_runner::https_proxy,
   Optional[String[1]]            $no_proxy              = $github_actions_runner::no_proxy,
   Optional[Boolean]              $disable_update        = $github_actions_runner::disable_update,
-  Optional[Array[String[1]]]     $labels                = undef,
+  Optional[Array[String]]        $labels                = undef,
   Optional[String[1]]            $enterprise_name       = $github_actions_runner::enterprise_name,
   Optional[String[1]]            $org_name              = $github_actions_runner::org_name,
   Optional[String[1]]            $repo_name             = undef,