diff --git a/server/backup/backup.go b/server/backup/backup.go
index 0ff3c02..01e73d0 100644
--- a/server/backup/backup.go
+++ b/server/backup/backup.go
@@ -22,6 +22,7 @@ import (
 var format = archives.CompressedArchive{
 	Compression: archives.Gz{},
 	Archival:    archives.Tar{},
+	Extraction:  archives.Tar{},
 }
 
 type AdapterType string