diff --git a/README.md b/README.md
index db840bf..8a35630 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ module "eks" {
   }
 
   cluster_encryption_config = [{
-    provider_key_arn = "ac01234b-00d9-40f6-ac95-e42345f78b00"
+    provider_key_arn = "arn:aws:kms:eu-west-1:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
     resources        = ["secrets"]
   }]