diff --git a/README.md b/README.md
index 7ed2d67..98d7a70 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,8 @@ fn main() {
 }
 ```
 
+You can trigger it by writing `!bot echo [hi]` in any channel.
+
 ## License
 `slackbot` is distributed under the [MIT License](./LICENSE).