diff --git a/server/src/domain/domain.constant.ts b/server/src/domain/domain.constant.ts
index 8023dc37fe..5e741e5d45 100644
--- a/server/src/domain/domain.constant.ts
+++ b/server/src/domain/domain.constant.ts
@@ -37,6 +37,7 @@ const validMimeTypes = [
   'image/jpeg',
   'image/jxl',
   'image/png',
+  'image/dng',
   'image/tiff',
   'image/webp',
   'image/x-adobe-dng',