diff --git a/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala b/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala
index 69ac9b0..071f26d 100644
--- a/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala
+++ b/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala
@@ -6,7 +6,7 @@ import fs2.Stream
 import cats.effect.IO
 import Main.putStrLn
 
-trait S3MetaDataEnricher {
+trait S3MetaDataEnricher extends S3Client {
 
   def enrichWithS3MetaData: Path => Stream[IO, S3MetaData] =
     path => Stream.eval(for {
diff --git a/src/main/scala/net/kemitix/s3thorp/Sync.scala b/src/main/scala/net/kemitix/s3thorp/Sync.scala
index 85a57da..8b7b96e 100644
--- a/src/main/scala/net/kemitix/s3thorp/Sync.scala
+++ b/src/main/scala/net/kemitix/s3thorp/Sync.scala
@@ -37,4 +37,6 @@ object Sync extends LocalFileStream with S3MetaDataEnricher {
       // upload
       p = Promise[Unit]()
     } yield p)
+
+  override def objectHead(bucket: String, key: String): (Hash, LastModified) = ???
 }