diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3af340521..e4ea71c66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -38,7 +38,7 @@ set ( PACKAGE "fluidsynth" )
 # FluidSynth package version
 set ( FLUIDSYNTH_VERSION_MAJOR 2 )
 set ( FLUIDSYNTH_VERSION_MINOR 2 )
-set ( FLUIDSYNTH_VERSION_MICRO 3 )
+set ( FLUIDSYNTH_VERSION_MICRO 4 )
 set ( VERSION "${FLUIDSYNTH_VERSION_MAJOR}.${FLUIDSYNTH_VERSION_MINOR}.${FLUIDSYNTH_VERSION_MICRO}" )
 set ( FLUIDSYNTH_VERSION "\"${VERSION}\"" )
 
@@ -53,7 +53,7 @@ set ( FLUIDSYNTH_VERSION "\"${VERSION}\"" )
 # This is not exactly the same algorithm as the libtool one, but the results are the same.
 set ( LIB_VERSION_CURRENT 3 )
 set ( LIB_VERSION_AGE 0 )
-set ( LIB_VERSION_REVISION 3 )
+set ( LIB_VERSION_REVISION 4 )
 set ( LIB_VERSION_INFO
       "${LIB_VERSION_CURRENT}.${LIB_VERSION_AGE}.${LIB_VERSION_REVISION}" )
 
diff --git a/doc/fluidsynth-v20-devdoc.txt b/doc/fluidsynth-v20-devdoc.txt
index e37a1d582..b722b11d3 100644
--- a/doc/fluidsynth-v20-devdoc.txt
+++ b/doc/fluidsynth-v20-devdoc.txt
@@ -8,8 +8,8 @@
 \author David Henningsson
 \author Tom Moebert
 \author Copyright © 2003-2021 Peter Hanappe, Conrad Berhörster, Antoine Schmitt, Pedro López-Cabanillas, Josh Green, David Henningsson, Tom Moebert
-\version Revision 2.2.3
-\date 2021-09-11
+\version Revision 2.2.4
+\date 2021-11-21
 
 All the source code examples in this document are in the public domain; you can use them as you please. This document is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported License. To view a copy of this license, visit https://creativecommons.org/licenses/by-sa/3.0/ . The FluidSynth library is distributed under the GNU Lesser General Public License. A copy of the GNU Lesser General Public License is contained in the FluidSynth package; if not, visit https://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt or write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.