diff --git a/tools/idem_apt_install b/tools/idem_apt_install
index 78c54e3..7233246 100755
--- a/tools/idem_apt_install
+++ b/tools/idem_apt_install
@@ -37,6 +37,7 @@ debian)
     done
     ;;
 arch)
+    sudo pacman -Syyu --noconfirm
     for i in "$@"; do
         if ! pacman -Ql "$i" &>/dev/null; then
             sudo pacman -S --noconfirm "$i"