diff --git a/libgm2/configure b/libgm2/configure
index 8404b0e6e6d..922b0715964 100755
--- a/libgm2/configure
+++ b/libgm2/configure
@@ -2445,7 +2445,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 ac_config_headers="$ac_config_headers config.h"
 
 
-libtool_VERSION=17:0:0
+libtool_VERSION=18:0:0
 
 
 # Default to --enable-multilib
diff --git a/libgm2/configure.ac b/libgm2/configure.ac
index 0465b7c1caf..2f7fe0d9e08 100644
--- a/libgm2/configure.ac
+++ b/libgm2/configure.ac
@@ -1,5 +1,5 @@
 # Configure script for libgm2.
-# Copyright (C) 2013-2022 Free Software Foundation, Inc.
+# Copyright (C) 2013-2023 Free Software Foundation, Inc.
 
 # This file is part of GCC.
 
@@ -27,7 +27,7 @@ AC_CONFIG_SRCDIR(Makefile.am)
 # AC_CONFIG_MACRO_DIR([config])
 AC_CONFIG_HEADER(config.h)
 
-libtool_VERSION=17:0:0
+libtool_VERSION=18:0:0
 AC_SUBST(libtool_VERSION)
 
 AM_ENABLE_MULTILIB(, ..)