diff --git a/doc/howto.md b/doc/howto.md
index ead8cb2..e6d23bb 100644
--- a/doc/howto.md
+++ b/doc/howto.md
@@ -2,14 +2,14 @@
 
 This is the step-by-step documentation how to use muxsa.  For an overview on muxsa please watch the [Demonstration video (a.k.a. the making of Network Security 2020)](https://nks-devel3.rus.uni-stuttgart.de/muxsa/making_of_netsec_2020.mp4) and keep the [muxsa block diagram](muxsa-blockdiagram.png) in mind.
 
-The author uses muxsa with Debian Linux 11 ("bullseye").  The muxsa scripts
+The author uses muxsa with Debian GNU/Linux 12 ("bookworm").  The muxsa scripts
 and the other software packages used are not very specific to this Linux
 distribution, so muxsa should work with other distros as well. However, some
 adjustments to path names or package names might be neccessary.
 
 ## Install dependencies on Linux
 
-Install the prerequisites (here: on Debian Linux 11) with:
+Install the prerequisites (here: on Debian Linux) with:
 
     apt-get install libvirt-clients spice-client-gtk imagemagick xdotool netpbm coreutils perl audacity ffmpeg 
 
@@ -18,7 +18,7 @@ Install the prerequisites (here: on Debian Linux 11) with:
 ### Install a Virtual Machine with Windows 10 and Powerpoint
 
 The author uses muxsa on a computer with 8 CPU cores and 24 GiB RAM that runs
-Debian Linux 11 (amd64).  In virt-manager, create a virtual machine with 4 CPU
+Debian Linux (amd64).  In virt-manager, create a virtual machine with 4 CPU
 cores, 16 GiB RAM, 80 GiB harddisk, display: spice, video: QXL, channel: spice. 
 
 Install Windows 10 Enterprise 64bit. Install the spice-guest-tools
@@ -135,7 +135,8 @@ sound reflections, but the audible difference was rather limited.
 
 ### Software drivers
 
-Debian Linux 11 normally uses ```pulseaudio``` to route different audio streams
+Debian Linux normally uses ```pulseaudio``` and/or ```pipewire```
+to route different audio streams
 from microphones to applications and from applications to headsets or
 speakers, respecively, as well as for mixing streams and resampling
 different sample rates. While these functions are useful for desktop usage,