diff --git a/doc/src/sgml/release-8.4.sgml b/doc/src/sgml/release-8.4.sgml
index c3226d340e7..0ed8cebe376 100644
--- a/doc/src/sgml/release-8.4.sgml
+++ b/doc/src/sgml/release-8.4.sgml
@@ -1,6 +1,128 @@
+
+ Release 8.4.21
+
+
+ Release Date
+ 2014-03-20
+
+
+
+ This release contains a variety of fixes from 8.4.20.
+ For information about new features in the 8.4 major release, see
+ .
+
+
+
+ The PostgreSQL> community will stop releasing updates
+ for the 8.4.X release series in July 2014.
+ Users are encouraged to update to a newer release branch soon.
+
+
+
+ Migration to Version 8.4.21
+
+
+ A dump/restore is not required for those running 8.4.X.
+
+
+
+ However, if you are upgrading from a version earlier than 8.4.19,
+ see .
+
+
+
+
+
+ Changes
+
+
+
+
+
+ Restore GIN metapages unconditionally to avoid torn-page risk
+ (Heikki Linnakangas)
+
+
+
+ Although this oversight could theoretically result in a corrupted
+ index, it is unlikely to have caused any problems in practice, since
+ the active part of a GIN metapage is smaller than a standard 512-byte
+ disk sector.
+
+
+
+
+
+ Allow regular-expression operators to be terminated early by query
+ cancel requests (Tom Lane)
+
+
+
+ This prevents scenarios wherein a pathological regular expression
+ could lock up a server process uninterruptably for a long time.
+
+
+
+
+
+ Remove incorrect code that tried to allow OVERLAPS> with
+ single-element row arguments (Joshua Yanovski)
+
+
+
+ This code never worked correctly, and since the case is neither
+ specified by the SQL standard nor documented, it seemed better to
+ remove it than fix it.
+
+
+
+
+
+ Avoid getting more than AccessShareLock> when de-parsing a
+ rule or view (Dean Rasheed)
+
+
+
+ This oversight resulted in pg_dump> unexpectedly
+ acquiring RowExclusiveLock> locks on tables mentioned as
+ the targets of INSERT>/UPDATE>/DELETE>
+ commands in rules. While usually harmless, that could interfere with
+ concurrent transactions that tried to acquire, for example,
+ ShareLock> on those tables.
+
+
+
+
+
+ Prevent interrupts while reporting non-ERROR> messages
+ (Tom Lane)
+
+
+
+ This guards against rare server-process freezeups due to recursive
+ entry to syslog()>, and perhaps other related problems.
+
+
+
+
+
+ Update time zone data files to tzdata> release 2014a
+ for DST law changes in Fiji and Turkey, plus historical changes in
+ Israel and Ukraine.
+
+
+
+
+
+
+
+
+
+
+
Release 8.4.20