diff --git a/doc/advanced/config-cheat-sheet.en-us.md b/doc/advanced/config-cheat-sheet.en-us.md
index 90117efb..02a61fe4 100644
--- a/doc/advanced/config-cheat-sheet.en-us.md
+++ b/doc/advanced/config-cheat-sheet.en-us.md
@@ -731,7 +731,7 @@ Default templates for project boards:
 ## Issue and pull request attachments (`attachment`)
 
 - `ENABLED`: **true**: Whether issue and pull request attachments are enabled.
-- `ALLOWED_TYPES`: **.docx,.gif,.gz,.jpeg,.jpg,.log,.pdf,.png,.pptx,.txt,.xlsx,.zip**: Comma-separated list of allowed file extensions (`.zip`), mime types (`text/plain`) or wildcard type (`image/*`, `audio/*`, `video/*`). Empty value or `*/*` allows all types.
+- `ALLOWED_TYPES`: **.docx,.gif,.gz,.jpeg,.jpg,mp4,.log,.pdf,.png,.pptx,.txt,.xlsx,.zip**: Comma-separated list of allowed file extensions (`.zip`), mime types (`text/plain`) or wildcard type (`image/*`, `audio/*`, `video/*`). Empty value or `*/*` allows all types.
 - `MAX_SIZE`: **4**: Maximum size (MB).
 - `MAX_FILES`: **5**: Maximum number of attachments that can be uploaded at once.
 - `STORAGE_TYPE`: **local**: Storage type for attachments, `local` for local disk or `minio` for s3 compatible object storage service, default is `local` or other name defined with `[storage.xxx]`