diff --git a/T120B165-ImgBoard/Controllers/PostController.cs b/T120B165-ImgBoard/Controllers/PostController.cs
index b16f88d..caa425d 100644
--- a/T120B165-ImgBoard/Controllers/PostController.cs
+++ b/T120B165-ImgBoard/Controllers/PostController.cs
@@ -273,6 +273,7 @@ public class PostController(
     /// <response code="400">If request is malformed</response>
     /// <response code="404">If post or file is not found</response>
     [HttpGet("{postId:int}/files/{fileId:int}")]
+    [ResponseCache(Duration = 604800, Location = ResponseCacheLocation.Any)] // Cache for 7 days
     [ProducesResponseType(StatusCodes.Status200OK)]
     [ProducesResponseType(StatusCodes.Status400BadRequest)]
     [ProducesResponseType(StatusCodes.Status404NotFound)]