diff --git a/modules/container_app/container_app.tf b/modules/container_app/container_app.tf
index 5386039..4b34c36 100644
--- a/modules/container_app/container_app.tf
+++ b/modules/container_app/container_app.tf
@@ -67,6 +67,7 @@ resource "azurerm_container_app" "container_app_app" {
           iterator = startup_probe
           content {
             failure_count_threshold = startup_probe.value.failure_count_threshold != null ? startup_probe.value.failure_count_threshold : null
+            host = startup_probe.value.host != null ? startup_probe.value.host : null
             initial_delay = startup_probe.value.initial_delay != null ? startup_probe.value.initial_delay : null
             interval_seconds = startup_probe.value.interval_seconds != null ? startup_probe.value.interval_seconds : null
             path = startup_probe.value.path != null ? startup_probe.value.path : null
diff --git a/modules/container_app/variables.tf b/modules/container_app/variables.tf
index b6b795c..7637a7a 100644
--- a/modules/container_app/variables.tf
+++ b/modules/container_app/variables.tf
@@ -18,6 +18,7 @@ variable "containers" {
     name = string
     startup_probe = optional(list(object({
       failure_count_threshold = optional(number)
+      host = optional(string)
       initial_delay = optional(number)
       interval_seconds = optional(number)
       path = optional(string)