diff --git a/DiscordChatExporter.Core/Exporting/ExportAssetDownloader.cs b/DiscordChatExporter.Core/Exporting/ExportAssetDownloader.cs
index eb44d4a9..badf681e 100644
--- a/DiscordChatExporter.Core/Exporting/ExportAssetDownloader.cs
+++ b/DiscordChatExporter.Core/Exporting/ExportAssetDownloader.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Net.Http;
 using System.Security.Cryptography;
 using System.Text;
 using System.Threading;
@@ -63,8 +64,15 @@ internal partial class ExportAssetDownloader(string workingDirPath, bool reuse)
         await Http.ResiliencePipeline.ExecuteAsync(
             async innerCancellationToken =>
             {
-                // Download the file
-                using var response = await Http.Client.GetAsync(url, innerCancellationToken);
+                // Download the file.
+                // Use ResponseHeadersRead so the response body is streamed to disk instead of
+                // being fully buffered into memory first, which can cause an OutOfMemoryException
+                // on large attachments.
+                using var response = await Http.Client.GetAsync(
+                    url,
+                    HttpCompletionOption.ResponseHeadersRead,
+                    innerCancellationToken
+                );
                 await using var output = File.Create(filePath);
                 await response.Content.CopyToAsync(output, innerCancellationToken);
             },