diff --git a/README.md b/README.md
index 2d33bfc..0c39c60 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,7 @@ additional_account_ids | []
 
 * `key_id`
 * `key_arn`
+* `alias_arn`
 
 ### Secret decryption
 
diff --git a/modules/kms_key/outputs.tf b/modules/kms_key/outputs.tf
index 4d61a1a..be4cf49 100644
--- a/modules/kms_key/outputs.tf
+++ b/modules/kms_key/outputs.tf
@@ -5,3 +5,7 @@ output "key_id" {
 output "key_arn" {
   value = "${aws_kms_key.key.arn}"
 }
+
+output "alias_arn" {
+  value = "${aws_kms_alias.alias.arn}"
+}
\ No newline at end of file