@ -182,6 +182,20 @@ following incompatible changes:</para>
<literal>lib.mkOverride</literal> can be used.
</para>
</listitem>
<listitem>
<para>
The following changes apply if the <literal>stateVersion</literal> is changed to 18.03 or higher.
For <literal>stateVersion = "17.09"</literal> or lower the old behavior is preserved.
</para>
<itemizedlist>
<listitem>
<para>
<literal>matrix-synapse</literal> uses postgresql by default instead of sqlite.
Migration instructions can be found <linkxlink:href="https://github.com/matrix-org/synapse/blob/master/docs/postgres.rst#porting-from-sqlite"> here </link>.