diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 42656ac..dea5465 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -31,7 +31,7 @@ build-arm64:
     stage: build
     script:
       - apt update
-      - apt install -y curl
+      - apt install -y curl xz
       - ./arm64-build.sh
     artifacts:
         paths:
diff --git a/arm64-build.sh b/arm64-build.sh
index 3da00cb..4f90375 100755
--- a/arm64-build.sh
+++ b/arm64-build.sh
@@ -13,10 +13,10 @@ OFFSET_IMG=$(file $RASPIOS_IMG | cut -d';' -f3 | cut -d',' -f8 | cut -d' ' -f3)
 mkdir -p mnt
 
 echo "Mounting second partition"
-sudo mount $RASPIOS_IMG -o offset=$((512*$OFFSET_IMG)) mnt
+mount $RASPIOS_IMG -o offset=$((512*$OFFSET_IMG)) mnt
 
 echo "Chroot into partition to start edition"
-sudo chroot mnt /bin/sh <<"EOT"
+chroot mnt /bin/sh <<"EOT"
 
 usermod -l creator pi
 usermod -d /home/creator -m creator