diff --git a/main.tf b/main.tf
index 9c43f117de..8a02e470e3 100644
--- a/main.tf
+++ b/main.tf
@@ -9,7 +9,7 @@ locals {
   }
 
   default_runner_labels = distinct(concat(["self-hosted", var.runner_os, var.runner_architecture]))
-  runner_labels         = (var.runner_disable_default_labels == false) ? concat(local.default_runner_labels, var.runner_extra_labels) : var.runner_extra_labels
+  runner_labels         = (var.runner_disable_default_labels == false) ? sort(concat(local.default_runner_labels, var.runner_extra_labels)) : var.runner_extra_labels
 
   ssm_root_path = var.ssm_paths.use_prefix ? "/${var.ssm_paths.root}/${var.prefix}" : "/${var.ssm_paths.root}"
 }