diff --git a/README.md b/README.md
index fd21514..abda17c 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ of last week.
 
 ```
 twoot.py [-h] -t <twitter account> -i <mastodon instance> -m <mastodon account>
-                -p <mastodon password> [-r] [-v] [-a <max age in days)>]
+                -p <mastodon password> [-r] [-s] [-v] [-a <max age in days)>]
                 [-d <min delay (in mins)>] [-c <max # of toots to post>]
 ```
 
@@ -78,6 +78,7 @@ is @superduperbot@botsin.space
 | -p    | Mastodon password                                | `my_Sup3r-S4f3*pw` | Yes |
 | -v    | upload videos to Mastodon                        | *N/A*              | No  |
 | -r    | Post reply-to tweets (ignored by default)        | *N/A*              | No  |
+| -s    | suppress retweets (posted by default)            | *N/A*              | No  |
 | -a    | Max. age of tweet to post (in days)              | `5`                | No  |
 | -d    | Min. age before posting new tweet (in minutes)   | `15`               | No  |
 | -c    | Max number of toots allowed to post (cap)        | `1`                | No  |