diff --git a/pkg/cmd/release/shared/upload.go b/pkg/cmd/release/shared/upload.go
index f98f46b92..abd9d33fc 100644
--- a/pkg/cmd/release/shared/upload.go
+++ b/pkg/cmd/release/shared/upload.go
@@ -62,6 +62,8 @@ func typeForFilename(fn string) string {
 		return "application/zip"
 	case ".js":
 		return "application/javascript"
+	case ".tar":
+		return "application/x-tar"
 	case ".tgz", ".tar.gz":
 		return "application/x-gtar"
 	case ".bz2":