diff --git a/doc/src/sgml/release-13.sgml b/doc/src/sgml/release-13.sgml
new file mode 100644
index 239586c..c0840c2
*** a/doc/src/sgml/release-13.sgml
--- b/doc/src/sgml/release-13.sgml
*************** Author: Alexander Korotkov <akorotkov@po
*** 409,414 ****
--- 409,418 ----
  Allow CREATE INDEX to specify the GiST signature length and maximum number of integer ranges (Nikita Glukhov)
  </para>

+ <para>
+ Indexes created on four and eight-byte integer array, tsvector, trigram,
+ ltree, and hstore columns can now control these GiST index parameters,
+ rather than using the defaults.
  </listitem>

  <listitem>