diff --git a/docbook/reference/en/en-US/modules/MigrationFromOlderVersions.xml b/docbook/reference/en/en-US/modules/MigrationFromOlderVersions.xml
index bfc96eb..7977348 100755
--- a/docbook/reference/en/en-US/modules/MigrationFromOlderVersions.xml
+++ b/docbook/reference/en/en-US/modules/MigrationFromOlderVersions.xml
@@ -15,6 +15,9 @@
Adapters now check the access token expiration with every request. If the token is expired, they will
attempt to invoke a refresh on the auth server using a saved refresh token.
</listitem>
+ <listitem>
+ Subject in AccessToken has been changed to the User ID.
+ </listitem>
</itemizedlist>
</sect1>
<sect1>
