diff --git a/docs/sessions/3pid.md b/docs/sessions/3pid.md
index b456bcc..352dcda 100644
--- a/docs/sessions/3pid.md
+++ b/docs/sessions/3pid.md
@@ -6,6 +6,7 @@
   - [Session scope](#session-scope)
 - [Notifications](#notifications)
   - [Email](#email)
+  - [Phone numbers](#msisdn-phone-numbers)
 - [Usage](#usage)
   - [Configuration](#configuration)
   - [Web views](#web-views)