diff --git a/docs/google.md b/docs/google.md
index adf3de8..64b767f 100644
--- a/docs/google.md
+++ b/docs/google.md
@@ -10,7 +10,8 @@ the [app passwords] page on your Google account.
 Start koushin with these upstream URLs:
 
     koushin imaps://imap.gmail.com smtps://smtp.gmail.com \
-        carddavs://www.googleapis.com/carddav/v1/principals/YOUREMAIL/
+        carddavs://www.googleapis.com/carddav/v1/principals/YOUREMAIL/ \
+        caldavs://www.google.com/calendar/dav
 
 Replace `YOUREMAIL` with your Google account's e-mail address.