diff --git a/src/main/scala/net/kemitix/s3thorp/Main.scala b/src/main/scala/net/kemitix/s3thorp/Main.scala
index 06b2e79..d7bf9a7 100644
--- a/src/main/scala/net/kemitix/s3thorp/Main.scala
+++ b/src/main/scala/net/kemitix/s3thorp/Main.scala
@@ -4,6 +4,7 @@ import java.nio.file.Paths
 
 import cats.effect.ExitCase.{Canceled, Completed, Error}
 import cats.effect.{ExitCode, IO, IOApp}
+import net.kemitix.s3thorp.awssdk.S3Client
 
 object Main extends IOApp {
 
@@ -12,7 +13,7 @@ object Main extends IOApp {
   val defaultConfig: Config =
     Config("(none)", "", Paths.get(".").toFile)
 
-  val sync = new Sync(new ReactiveS3Client())
+  val sync = new Sync(S3Client.defaultClient)
 
   def program(args: List[String]): IO[ExitCode] =
     for {
diff --git a/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala b/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala
index 5871ce5..e8fb83e 100644
--- a/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala
+++ b/src/main/scala/net/kemitix/s3thorp/S3MetaDataEnricher.scala
@@ -4,6 +4,7 @@ import java.io.File
 
 import fs2.Stream
 import cats.effect.IO
+import net.kemitix.s3thorp.awssdk.S3Client
 
 trait S3MetaDataEnricher extends S3Client {
 
diff --git a/src/main/scala/net/kemitix/s3thorp/Sync.scala b/src/main/scala/net/kemitix/s3thorp/Sync.scala
index fa5b0cb..a026422 100644
--- a/src/main/scala/net/kemitix/s3thorp/Sync.scala
+++ b/src/main/scala/net/kemitix/s3thorp/Sync.scala
@@ -6,6 +6,7 @@ import java.time.Instant
 import cats.effect._
 import fs2.Stream
 import net.kemitix.s3thorp.Main.putStrLn
+import net.kemitix.s3thorp.awssdk.S3Client
 
 import scala.concurrent.Promise
 
diff --git a/src/main/scala/net/kemitix/s3thorp/ReactiveS3Client.scala b/src/main/scala/net/kemitix/s3thorp/awssdk/ReactiveS3Client.scala
similarity index 89%
rename from src/main/scala/net/kemitix/s3thorp/ReactiveS3Client.scala
rename to src/main/scala/net/kemitix/s3thorp/awssdk/ReactiveS3Client.scala
index 9ba95d3..a4876c8 100644
--- a/src/main/scala/net/kemitix/s3thorp/ReactiveS3Client.scala
+++ b/src/main/scala/net/kemitix/s3thorp/awssdk/ReactiveS3Client.scala
@@ -1,4 +1,4 @@
-package net.kemitix.s3thorp
+package net.kemitix.s3thorp.awssdk
 
 import cats.effect.IO
 import com.github.j5ik2o.reactive.aws.s3.S3AsyncClient
@@ -6,7 +6,7 @@ import com.github.j5ik2o.reactive.aws.s3.cats.S3CatsIOClient
 import software.amazon.awssdk.services.s3.model.{HeadObjectRequest, NoSuchKeyException}
 import software.amazon.awssdk.services.s3.{S3AsyncClient => JavaS3AsyncClient}
 
-class ReactiveS3Client extends S3Client {
+private class ReactiveS3Client extends S3Client {
 
   private val s3Client = S3CatsIOClient(S3AsyncClient(JavaS3AsyncClient.create))
 
diff --git a/src/main/scala/net/kemitix/s3thorp/S3Client.scala b/src/main/scala/net/kemitix/s3thorp/awssdk/S3Client.scala
similarity index 61%
rename from src/main/scala/net/kemitix/s3thorp/S3Client.scala
rename to src/main/scala/net/kemitix/s3thorp/awssdk/S3Client.scala
index 41e0220..e7dbec0 100644
--- a/src/main/scala/net/kemitix/s3thorp/S3Client.scala
+++ b/src/main/scala/net/kemitix/s3thorp/awssdk/S3Client.scala
@@ -1,4 +1,4 @@
-package net.kemitix.s3thorp
+package net.kemitix.s3thorp.awssdk
 
 import cats.effect.IO
 import net.kemitix.s3thorp.Sync.{Hash, LastModified}
@@ -8,3 +8,9 @@ trait S3Client {
   def objectHead(bucket: String, key: String): IO[Option[(Hash, LastModified)]]
 
 }
+
+object S3Client {
+
+  val defaultClient: S3Client = new ReactiveS3Client
+
+}
\ No newline at end of file
diff --git a/src/test/scala/net/kemitix/s3thorp/SyncSuite.scala b/src/test/scala/net/kemitix/s3thorp/SyncSuite.scala
index df71a3f..acacd36 100644
--- a/src/test/scala/net/kemitix/s3thorp/SyncSuite.scala
+++ b/src/test/scala/net/kemitix/s3thorp/SyncSuite.scala
@@ -3,6 +3,7 @@ package net.kemitix.s3thorp
 import java.time.Instant
 
 import cats.effect.IO
+import net.kemitix.s3thorp.awssdk.S3Client
 import org.scalatest.FunSpec
 
 class SyncSuite extends FunSpec {