diff --git a/docs/transports.md b/docs/transports.md
index 7173f8a8f..28029b9e6 100644
--- a/docs/transports.md
+++ b/docs/transports.md
@@ -85,6 +85,7 @@ The File transport should really be the 'Stream' transport since it will accept
 * __tailable:__ If true, log files will be rolled based on maxsize and maxfiles, but in ascending order. The __filename__ will always have the most recent log lines. The larger the appended number, the older the log file.
 * __maxRetries:__ The number of stream creation retry attempts before entering a failed state. In a failed state the transport stays active but performs a NOOP on it's log function. (default 2)
 * __zippedArchive:__ If true, all log files but the current one will be zipped.
+* __options:__ options passed to `fs.createWriteStream` (default `{flags: 'a'}`).
 
 *Metadata:* Logged via util.inspect(meta);