diff --git a/API/Controllers/DownloadController.cs b/API/Controllers/DownloadController.cs
index f0a006120..6e7408fa4 100644
--- a/API/Controllers/DownloadController.cs
+++ b/API/Controllers/DownloadController.cs
@@ -81,6 +81,10 @@ namespace API.Controllers
                 {
                     ".cbz" => "application/zip",
                     ".cbr" => "application/vnd.rar",
+                    ".cb7" => "application/x-compressed",
+                    ".epub" => "application/epub+zip",
+                    ".7z" => "application/x-7z-compressed",
+                    ".7zip" => "application/x-7z-compressed",
                     _ => contentType
                 };
             }