diff --git a/docs/extending/plugins-list.md b/docs/extending/plugins-list.md
index 5457a94c..ee6b98b6 100644
--- a/docs/extending/plugins-list.md
+++ b/docs/extending/plugins-list.md
@@ -140,3 +140,7 @@
   - `verifyConditions`: Validate configuration and verify ```HEROKU_API_KEY```
   - `prepare`: Update the package.json version and create release tarball
   - `publish`: Publish version to heroku
+- [semantic-release-mattermost](https://github.com/ttrobisch/semantic-release-mattermost)
+  - `verifyConditions`: Verify that the webhook is setup and release-notes-generator is present.
+  - `success`: Send a message about the new release and its notes to a [mattermost](https://mattermost.com/) webhook.
+