diff --git a/live-build/ubuntu-cpc/hooks.d/base/disk-image-ppc64el.binary b/live-build/ubuntu-cpc/hooks.d/base/disk-image-ppc64el.binary
index 77f24e7e..dc87a361 100755
--- a/live-build/ubuntu-cpc/hooks.d/base/disk-image-ppc64el.binary
+++ b/live-build/ubuntu-cpc/hooks.d/base/disk-image-ppc64el.binary
@@ -33,6 +33,7 @@ install_grub() {
     chroot mountpoint apt-get -qqy update
     chroot mountpoint apt-get -qqy install grub-ieee1275
     chroot mountpoint apt-get -qqy remove --purge grub-legacy-ec2
+    chroot mountpoint apt-get autoremove --purge --assume-yes
 
     # set the kernel commandline to use hvc0
     mkdir -p mountpoint/etc/default/grub.d
diff --git a/live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary b/live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary
index 910f67a9..674d795a 100755
--- a/live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary
+++ b/live-build/ubuntu-cpc/hooks.d/base/disk-image-uefi.binary
@@ -89,11 +89,13 @@ install_grub() {
             efi_target=arm-efi
             ;;
         amd64)
-            chroot mountpoint apt-get install -qqy grub-efi-amd64-signed shim-signed
+            chroot mountpoint apt-get install -qqy shim-signed
             efi_target=x86_64-efi
             ;;
     esac
 
+    chroot mountpoint apt-get autoremove --purge --assume-yes
+
     chroot mountpoint grub-install "${loop_device}" \
         --boot-directory=/boot \
         --efi-directory=/boot/efi \
diff --git a/live-build/ubuntu-cpc/hooks.d/base/disk-image.binary b/live-build/ubuntu-cpc/hooks.d/base/disk-image.binary
index 8998df68..96bf83a5 100755
--- a/live-build/ubuntu-cpc/hooks.d/base/disk-image.binary
+++ b/live-build/ubuntu-cpc/hooks.d/base/disk-image.binary
@@ -136,6 +136,7 @@ fi
 if [ "$ARCH" = "s390x" ]; then
     # Do ZIPL install bits
     chroot mountpoint apt-get -qqy install s390-tools sysconfig-hardware
+    chroot mountpoint apt-get autoremove --purge --assume-yes
 
     # Write out cloudy zipl.conf for future kernel updates
     cat << EOF > mountpoint/etc/zipl.conf
diff --git a/live-build/ubuntu-cpc/hooks.d/base/wsl.binary b/live-build/ubuntu-cpc/hooks.d/base/wsl.binary
index 05f51e30..8ce28140 100755
--- a/live-build/ubuntu-cpc/hooks.d/base/wsl.binary
+++ b/live-build/ubuntu-cpc/hooks.d/base/wsl.binary
@@ -35,6 +35,7 @@ cp -a rootfs.dir $rootfs_dir
 setup_mountpoint $rootfs_dir
 
 env DEBIAN_FRONTEND=noninteractive chroot $rootfs_dir apt-get -y -qq install ubuntu-wsl
+env DEBIAN_FRONTEND=noninteractive chroot $rootfs_dir apt-get autoremove --purge --assume-yes
 
 create_manifest $rootfs_dir livecd.ubuntu-cpc.wsl.rootfs.manifest
 teardown_mountpoint $rootfs_dir