diff --git a/NEWS b/NEWS
index 5792447..47d483d 100644
--- a/NEWS
+++ b/NEWS
@@ -7,7 +7,7 @@ Copyright (C) Artyom V. Poptsov <poptsov.artyom@gmail.com>
   are permitted in any medium without royalty provided the copyright
   notice and this notice are preserved.
 
-* Unreleased
+* Changes in version 0.3.0 (2023-12-28)
 ** =udev-monitor-add-filter!=: Make "devtype" parameter optional
 Now =udev-monitor-add-filter!= can be called without the =devtype= parameter
 so the UDEV monitor will match all events for the specified subsystem.
diff --git a/configure.ac b/configure.ac
index c41b8ba..b6ce99b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,7 @@ dnl   Process this file with autoconf to produce configure.
 dnl
 
 define(GUILE_UDEV_CONFIGURE_COPYRIGHT, [[
-Copyright (C) 2020-2022 Artyom V. Poptsov <poptsov.artyom@gmail.com>
+Copyright (C) 2020-2023 Artyom V. Poptsov <poptsov.artyom@gmail.com>
 
 This file is part of Guile-Udev.
 
@@ -21,7 +21,7 @@ You should have received a copy of the GNU General Public License
 along with Guile-Udev.  If not, see <http://www.gnu.org/licenses/>.
 ]])
 
-AC_INIT([Guile-Udev], [0.2.4], [poptsov.artyom@gmail.com],
+AC_INIT([Guile-Udev], [0.3.0], [poptsov.artyom@gmail.com],
                      [guile-udev],
                      [https://github.com/artyom-poptsov/guile-udev])
 
@@ -29,7 +29,9 @@ AC_COPYRIGHT(GUILE_UDEV_CONFIGURE_COPYRIGHT)
 
 dnl See
 dnl   <https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html>
-LIBGUILE_UDEV_INTERFACE="1:4:0"
+dnl Format:
+dnl   current[:revision[:age]]
+LIBGUILE_UDEV_INTERFACE="2:0:1"
 AC_SUBST(LIBGUILE_UDEV_INTERFACE)
 
 AC_CONFIG_AUX_DIR([build-aux])