1 files changed, 1 insertions, 0 deletions

diff --git a/src/routes/attachments.ts b/src/routes/attachments.ts

index 2e635b43..acc7604d 100644
--- a/src/routes/attachments.ts
+++ b/src/routes/attachments.ts
@@ -52,6 +52,7 @@ router.get("/:channel_id/:id/:filename", async (req: Request, res: Response) =>
 	const type = await FileType.fromBuffer(file);
 
 	res.set("Content-Type", type?.mime);
+	res.set("Cache-Control", "public, max-age=31536000");
 
 	return res.send(file);
 });