diff --git a/application_insights/outputs.tf b/application_insights/outputs.tf
index 4477460..fc3d1d2 100644
--- a/application_insights/outputs.tf
+++ b/application_insights/outputs.tf
@@ -3,7 +3,8 @@ output "instrumentation_key" {
 }
 
 output "connection_string" {
-  value = data.azurerm_application_insights.application_insights.connection_string
+  value     = data.azurerm_application_insights.application_insights.connection_string
+  sensitive = true
 }
 
 output "id" {