diff --git a/AUTHORS b/AUTHORS
index 11c439c..f267823 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -3,7 +3,7 @@ to provide the best SID listening experience.
 
 Copyright (c) 2000 Simon White
 Copyright (c) 2007-2010 Antti Lankila
-Copyright (c) 2010-2023 Leandro Nini
+Copyright (c) 2010-2024 Leandro Nini
 
 This version of the freely available sidplayfp player source code
 contains the following contributed or derived work. In the order they first
diff --git a/README b/README
index 1811535..2d1c048 100644
--- a/README
+++ b/README
@@ -8,7 +8,7 @@ to provide the best SID listening experience.
 
 Copyright (c) 2000 Simon White
 Copyright (c) 2007-2010 Antti Lankila
-Copyright (c) 2010-2023 Leandro Nini <drfiemost@users.sourceforge.net>
+Copyright (c) 2010-2024 Leandro Nini <drfiemost@users.sourceforge.net>
 
 
 stilview
diff --git a/configure.ac b/configure.ac
index 7911034..5fe9eae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT([sidplayfp], [2.5.1], [], [], [https://github.com/libsidplayfp/sidplayfp/])
+AC_INIT([sidplayfp], [2.6.0], [], [], [https://github.com/libsidplayfp/sidplayfp/])
 AC_CONFIG_SRCDIR([src/main.cpp])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
diff --git a/doc/en/sidplayfp.ini.pod b/doc/en/sidplayfp.ini.pod
index ad393b8..6229d5c 100644
--- a/doc/en/sidplayfp.ini.pod
+++ b/doc/en/sidplayfp.ini.pod
@@ -306,7 +306,7 @@ Wrote the original man page.
 
 =item Copyright (C) 2009-2015 VICE Project
 
-=item Copyright (C) 2010-2023 Leandro Nini
+=item Copyright (C) 2010-2024 Leandro Nini
 
 =back
 
diff --git a/doc/en/sidplayfp.pod b/doc/en/sidplayfp.pod
index d8911f6..25a9cb7 100644
--- a/doc/en/sidplayfp.pod
+++ b/doc/en/sidplayfp.pod
@@ -346,7 +346,7 @@ Wrote the original man page.
 
 =item Copyright (C) 2009-2015 VICE Project
 
-=item Copyright (C) 2010-2022 Leandro Nini
+=item Copyright (C) 2010-2024 Leandro Nini
 
 =back