diff --git a/terraform/projects/app-elasticsearch6/main.tf b/terraform/projects/app-elasticsearch6/main.tf
index 6c045d220..83b5240ee 100644
--- a/terraform/projects/app-elasticsearch6/main.tf
+++ b/terraform/projects/app-elasticsearch6/main.tf
@@ -25,6 +25,7 @@ provider "aws" {
     tags = {
       terraform_deployment = basename(abspath(path.root))
       aws_environment      = var.aws_environment
+      project              = "GOV.UK - Search"
     }
   }
 }