diff --git a/doc/src/sgml/pgcrypto.sgml b/doc/src/sgml/pgcrypto.sgml
new file mode 100644
index 0acd11e..f636703
*** a/doc/src/sgml/pgcrypto.sgml
--- b/doc/src/sgml/pgcrypto.sgml
*************** gen_random_bytes(count integer) returns
*** 1132,1139 ****
gen_random_uuid() returns uuid
! Returns a version 4 (random) UUID. (Obsolete, this function is now also
! included in core PostgreSQL.)
--- 1132,1141 ----
gen_random_uuid() returns uuid
! Returns a version 4 (random) UUID. (This function now redirects internally
! to the core PostgreSQL function providing
! the same functionality and is included in the extension for backwards compatibility;
! see for details.)