-diff -ur postgresql-11.15.orig/configure.in postgresql-11.15/configure.in
---- postgresql-11.15.orig/configure.in 2022-02-07 22:20:23.000000000 +0100
-+++ postgresql-11.15/configure.in 2022-04-04 18:20:38.577482081 +0200
+--- postgresql-11.20.orig/configure.in 2022-02-07 22:20:23.000000000 +0100
++++ postgresql-11.20/configure.in 2022-04-04 18:20:38.577482081 +0200
@@ -19,10 +19,6 @@
- AC_INIT([PostgreSQL], [11.15], [pgsql-bugs@postgresql.org])
+ AC_INIT([PostgreSQL], [11.20], [pgsql-bugs@postgresql.org])
-m4_if(m4_defn([m4_PACKAGE_VERSION]), [2.69], [], [m4_fatal([Autoconf version 2.69 is required.
-Untested combinations of 'autoconf' and PostgreSQL versions are not