diff --git a/debian/changelog b/debian/changelog
index 4fffffd..da66779 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,4 +1,10 @@
-daliserver (0.3) UNRELEASED; urgency=medium
+daliserver (0.4) unstable; urgency=medium
+
+  * Add systemd unit, SysV init script is kept for compatibility
+
+ -- Gregor Riepl <onitake@gmail.com>  Mon, 12 Feb 2024 00:32:54 +0100
+
+daliserver (0.3) unstable; urgency=medium
 
   * Numerous bug fixes (thanks to all contributors!)
   * Debian packaging cleanup, hardening
diff --git a/debian/compat b/debian/compat
index ec63514..f599e28 100644
--- a/debian/compat
+++ b/debian/compat
@@ -1 +1 @@
-9
+10
diff --git a/debian/daliserver.default b/debian/daliserver.default
index c107d75..19d2e2d 100644
--- a/debian/daliserver.default
+++ b/debian/daliserver.default
@@ -1,6 +1,8 @@
 # Additional options for daliserver
+# -d <loglevel> sets the logging level (fatal, error, warn, info, default=info)
 # -n enables testing mode without USB connectivity
-# -l sets the listening address (use 0.0.0.0 to listen on all interfaces)
-# -p changes the port
+# -u <bus:dev> only map to one specific USB port (will use the first found otherwise)
+# -l <address> sets the listening address (use 0.0.0.0 to listen on all interfaces, default=127.0.0.1)
+# -p <port> changes the TCP port (default=55825)
 DALISERVER_OPTS=""
 
diff --git a/debian/daliserver.service b/debian/daliserver.service
new file mode 100644
index 0000000..c8b6525
--- /dev/null
+++ b/debian/daliserver.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=DALI USB adapter multiplexer
+
+[Service]
+# see the defaults file for useful options
+EnvironmentFile=-/etc/default/daliserver
+ExecStart=/usr/bin/daliserver ${DALISERVER_OPTS}
+
+[Install]
+WantedBy=multi-user.target
diff --git a/perl/lampcheck.pl b/perl/lampcheck.pl
old mode 100644
new mode 100755