diff --git a/modules/services/main.tf b/modules/services/main.tf
index 451a0c1..0f2a45b 100644
--- a/modules/services/main.tf
+++ b/modules/services/main.tf
@@ -32,7 +32,7 @@ variable "kubernetes_input" {
     external_port          = optional(bool, false)
     service_type           = optional(string, "ClusterIP")
     service_name           = optional(string)
-    domain_name            = optional(string)
+    domain_name            = optional(list(string))
     legacy_domain          = optional(bool, false)
     exposed                = optional(bool, true)
     liveness_tcp_socket    = optional(number)