diff --git a/deployment/modules/tileserver/policies/policies.json b/deployment/modules/tileserver/policies/policies.json
index e29ba1f..4fadfaa 100644
--- a/deployment/modules/tileserver/policies/policies.json
+++ b/deployment/modules/tileserver/policies/policies.json
@@ -46,7 +46,8 @@
             "Effect": "Allow",
             "Action": [
                 "s3:GetObject",
-                "s3:ListBucket"
+                "s3:ListBucket",
+                "s3:HeadObject"
             ],
             "Resource": [
                 "arn:aws:s3:::mono-deployment-dev",