diff --git a/ptx2-3-vers-4.sh b/ptx2-3-vers-4.sh
index 4c55479a6301f2669cc76c7555cadb4299613093..96cf1c7238b171d3f727b28018f20bc8bcac332d 100755
--- a/ptx2-3-vers-4.sh
+++ b/ptx2-3-vers-4.sh
@@ -31,8 +31,9 @@ exec 2>>"$fichierlog"
 # Suppression de la référence au dépôt Primtux2-Lubuntu
 sed -i '/PrimTux-Lubuntu/d' /etc/apt/sources.list.d/primtux.list
 
-apt-get update
-DEBIAN_FRONTEND='noninteractive' apt-get -y dist-upgrade
+DEBIAN_FRONTEND='noninteractive' apt-get -o Dpkg::Options::="--force-confold" update
+DEBIAN_FRONTEND='noninteractive' apt-get -o Dpkg::Options::="--force-confold" update
+ -y dist-upgrade
 
 # Vérifie l'OS
 archi=$(uname -m)
@@ -124,8 +125,8 @@ if [ "$version" = "8 (jessie)" ]
 fi
 
 # Harmonisation des paquets
-sudo apt-get remove -y --purge handymenu-primtux2 handymenu-mini-primtux2 handymenu-maxi-primtux2 handymenu-super-primtux2 qalculate-gtk
-apt-get install -y handymenu thunderbird thunderbird-l10n-fr gnome-calculator geany mothsart-wallpapers-primtux gspeech xfce4-notifyd gir1.2-gstreamer-1.0
+sudo DEBIAN_FRONTEND='noninteractive' apt-get remove -y --purge handymenu-primtux2 handymenu-mini-primtux2 handymenu-maxi-primtux2 handymenu-super-primtux2 qalculate-gtk
+DEBIAN_FRONTEND='noninteractive' apt-get -o Dpkg::Options::="--force-confold" install -y handymenu thunderbird thunderbird-l10n-fr gnome-calculator geany mothsart-wallpapers-primtux gspeech xfce4-notifyd gir1.2-gstreamer-1.0
 
 # Rétablissement de la propriété de chaque home
 chown -R 01-mini:01-mini /home/01-mini
@@ -247,6 +248,6 @@ if ! [ -e "/etc/primtux_version" ]
       fi
 fi
 
-apt-get update && apt-get dist-upgrade
+DEBIAN_FRONTEND='noninteractive' apt-get -o Dpkg::Options::="--force-confold" update && DEBIAN_FRONTEND='noninteractive' apt-get -o Dpkg::Options::="--force-confold" dist-upgrade
 
 exit 0