diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@
 )
 
 project(bitcoin-abc
-	VERSION 0.21.5
+	VERSION 0.21.6
 	DESCRIPTION "Bitcoin ABC is a full node implementation of the Bitcoin Cash protocol."
 	HOMEPAGE_URL "https://www.bitcoinabc.org"
 )
diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,7 @@
 AC_PREREQ([2.60])
 define(_CLIENT_VERSION_MAJOR, 0)
 define(_CLIENT_VERSION_MINOR, 21)
-define(_CLIENT_VERSION_REVISION, 5)
+define(_CLIENT_VERSION_REVISION, 6)
 define(_CLIENT_VERSION_IS_RELEASE, true)
 define(_COPYRIGHT_YEAR, 2020)
 define(_COPYRIGHT_HOLDERS,[The %s developers])
diff --git a/doc/release-notes.md b/doc/release-notes.md
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -1,36 +1,5 @@
-Bitcoin ABC version 0.21.5 is now available from:
+Bitcoin ABC version 0.21.6 is now available from:
 
-  <https://download.bitcoinabc.org/0.21.5/>
+  <https://download.bitcoinabc.org/0.21.6/>
 
 This release includes the following features and fixes:
- - Removed deprecated `getinfo` RPC.
- - Update univalue to 1.0.5
- - The Official Ubuntu PPA will no longer update the package for the 16.04
-   Xenial version. The most recent versions can still be downloaded from
-   bitcoinabc.org. The PPA is now offering a package for 20.04 Focal.
- - Minor performance improvements for JSON RPC calls that fetch headers or blocks.
- - Various minor bug fixes.
-
-Tests
------
- - The regression test chain, that can be enabled by the `-regtest` command line
-   flag, now requires transactions to not violate standard policy by default.
-   Making the default the same as mainnet makes it easier to test mainnet
-   behavior on regtest. Be reminded that the testnet still allows non-standard
-   txs by default and that the policy can be locally adjusted with the
-   `-acceptnonstdtxn` command line flag for both test chains.
-
-Configuration
--------------
- - An error is issued where previously a warning was issued when a setting in
-   the config file was specified in the default section, but not overridden for
-   the selected network. This change takes only effect if the selected network
-   is not mainnet.
- - The `echo` RPC will now return an internal bug report if exactly 100
-   arguments are provided.
-
-Tools
------
- - A new `bitcoin-wallet` tool is now available, distributed alongside our usual binaries.
-   This tool provides a way to create new wallet files and inspect basic information about
-   a wallet without using any RPCs.
diff --git a/doc/release-notes.md b/doc/release-notes/release-notes-0.21.5.md
copy from doc/release-notes.md
copy to doc/release-notes/release-notes-0.21.5.md