From 6cc1ee9424c61b234987a7e0b72f8d82ae78f2ff Mon Sep 17 00:00:00 2001
From: Giteabot <teabot@gitea.io>
Date: Fri, 24 Apr 2026 17:45:10 +0800
Subject: [PATCH] fix: dump with default zip type produces uncompressed zip
 (#37401) (#37402)

Backport #37401

Fix #37393

Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com>
Co-authored-by: wxiaoguang <2114189+wxiaoguang@users.noreply.github.com>
---
 modules/dump/dumper.go | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules/dump/dumper.go b/modules/dump/dumper.go
index 02829d6a1e..2f16070704 100644
--- a/modules/dump/dumper.go
+++ b/modules/dump/dumper.go
@@ -4,6 +4,7 @@
 package dump
 
 import (
+	"archive/zip"
 	"context"
 	"errors"
 	"fmt"
@@ -85,7 +86,7 @@ func NewDumper(ctx context.Context, format string, output io.Writer) (*Dumper, e
 	var comp archives.ArchiverAsync
 	switch format {
 	case "zip":
-		comp = archives.Zip{}
+		comp = archives.Zip{Compression: zip.Deflate}
 	case "tar":
 		comp = archives.Tar{}
 	case "tar.sz":