diff --git a/docs/sources/installation/upgrading.md b/docs/sources/installation/upgrading.md
index 18c6cb649b1..d230efb1888 100644
--- a/docs/sources/installation/upgrading.md
+++ b/docs/sources/installation/upgrading.md
@@ -146,3 +146,5 @@ If you have `login_remember_days` configured to 0 (zero) you should change your
 login_maximum_inactive_lifetime_days = 1
 login_maximum_lifetime_days = 1
 ```
+
+The default cookie name for storing the auth token is `grafana_sess`. you can configure this with `login_cookie_name` in `[auth]` settings.
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