diff --git a/files_to_inject/preseeds/default.preseed b/files_to_inject/preseeds/default.preseed
index 4438c9e..e3a729f 100755
--- a/files_to_inject/preseeds/default.preseed
+++ b/files_to_inject/preseeds/default.preseed
@@ -52,6 +52,7 @@ d-i pkgsel/include string \
     htop \
     spice-vdagent \
     flatpak \
+    gpg \
     fish
 
 # Installation GRUB avec support multi-OS
@@ -61,21 +62,23 @@ d-i grub-installer/with_other_os boolean true
 # Choix manuel du périphérique d'installation GRUB
 d-i grub-installer/bootdev seen false
 
-# Configuration post-installation : kernel XanMod, shell Fish, dépôts Flathub et suppression Konqueror
+# Configuration post-installation : kernel XanMod, shell Fish, dépôts Flathub, mesa kisak et suppression Konqueror
 d-i preseed/late_command string \
+    in-target apt update ; \
+    in-target apt install --no-install-recommends gpg dkms libdw-dev clang lld llvm; \
     in-target mkdir -p /etc/apt/keyrings ; \
     in-target wget -qO /etc/apt/keyrings/xanmod-archive-keyring.gpg https://dl.xanmod.org/archive.key ; \
     in-target sh -c "echo 'deb [signed-by=/etc/apt/keyrings/xanmod-archive-keyring.gpg] http://deb.xanmod.org trixie main' > /etc/apt/sources.list.d/xanmod.list" ; \
-    in-target apt-get install -y gpg ; \
     in-target gpg --keyserver keyserver.ubuntu.com --recv-keys EB8B81E14DA65431D7504EA8F63F0F2B90935439 ; \
     in-target gpg --export EB8B81E14DA65431D7504EA8F63F0F2B90935439 | in-target tee /etc/apt/trusted.gpg.d/kisak.gpg ; \
     in-target sh -c "echo 'deb https://ppa.launchpadcontent.net/kisak/kisak-mesa/ubuntu plucky main' >> /etc/apt/sources.list.d/kisak-mesa.list" ; \
     in-target sh -c "echo 'deb-src https://ppa.launchpadcontent.net/kisak/kisak-mesa/ubuntu plucky main' >> /etc/apt/sources.list.d/kisak-mesa.list" ; \
-    in-target apt-get update ; \
-    in-target apt-get install -y linux-xanmod-x64v3 || true ; \
+    in-target apt update ; \
+    in-target apt install -y linux-xanmod-x64v3 || true ; \
     in-target flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo ; \
-    in-target apt-get remove --purge -y konqueror || true ; \
+    in-target apt remove --purge -y konqueror || true ; \
     in-target bash -c "for u in \$(awk -F: '\$3 >= 1000 && \$3 < 65534 { print \$1 }' /etc/passwd); do chsh -s /usr/bin/fish \$u; done"
+    in-target dpkg --add-architecture i386
 
 # Finalisation : redémarrage automatique
 d-i finish-install/reboot_in_progress note
\ No newline at end of file