Using-pepcli.md

@@ -312,6 +312,7 @@ Important flags are:
 - `-f` Overwrite or remove existing data in output directory
 - `-r` Resume an interrupted download
 - `-u` Updates an existing output directory, e.g. when new data is available. This will use the same participant(group)s and column(group)s as the original download, so `-c`, `-C`, `-p` and `-P` are not allowed with this flag
+- `--report-progress` Show progress updates
 
 ## `query`