diff --git a/hplip.spec b/hplip.spec
index b76d1bc..c7a8b62 100644
--- a/hplip.spec
+++ b/hplip.spec
@@ -1,9 +1,10 @@
 %define        lp_uid 9
 %define        lp_gid 9
 %define cups_ver %(cups-config --api-version)
+%define        plugin_version 3.23.8
 Name:          hplip
-Version:       3.23.8
-Release:       2mamba
+Version:       3.23.12
+Release:       1mamba
 Summary:       A printer driver for HP inkjet devices
 Group:         System/Spooling
 Vendor:        openmamba
@@ -11,7 +12,7 @@ Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           https://developers.hp.com/hp-linux-imaging-and-printing
 Source:        http://downloads.sourceforge.net/sourceforge/hplip/hplip-%{version}.tar.gz
-Source1:       http://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/hplip-%{version}-plugin.run
+Source1:       http://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/hplip-%{plugin_version}-plugin.run
 Patch0:        %{name}-3.11.7-cups-1.5.patch
 Patch1:        %{name}-3.12.9-cups-1.6.patch
 Patch2:        hplip-3.18.12-openmamba-AUTH_TYPES-warning.patch
@@ -34,7 +35,6 @@ BuildRequires: libnsl-devel
 BuildRequires: libopenssl-devel
 BuildRequires: libpython311-devel
 BuildRequires: libstdc++6-devel
-BuildRequires: libsystemd-devel
 BuildRequires: libudev-devel
 BuildRequires: libusb-compat-devel
 BuildRequires: libusb-devel
@@ -278,6 +278,9 @@ fi
 %{_localstatedir}/lib/hp/hplip.state
 
 %changelog
+* Tue Dec 26 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 3.23.12-1mamba
+- update to 3.23.12
+
 * Sun Oct 01 2023 Silvan Calarco <silvan.calarco@mambasoft.it> 3.23.8-2mamba
 - rebuilt with python3 == 3.11