diff --git a/lib/buster-preseed.cfg b/lib/buster-preseed.cfg
index 01a670a..2c8e6ff 100644
--- a/lib/buster-preseed.cfg
+++ b/lib/buster-preseed.cfg
@@ -63,7 +63,7 @@ d-i partman-auto/expert_recipe_file string /partition_recipe
 #d-i apt-setup/contrib boolean true
 
 # Individual additional packages to install
-d-i pkgsel/include string bash dosfstools initramfs-tools rcn-ee-archive-keyring util-linux wget board-firmware net-tools
+d-i pkgsel/include string bash dosfstools initramfs-tools rcn-ee-archive-keyring util-linux wget board-firmware net-tools sudo
 # Whether to upgrade packages after debootstrap.
 # Allowed values: none, safe-upgrade, full-upgrade
 d-i pkgsel/upgrade select safe-upgrade
diff --git a/lib/stretch-preseed.cfg b/lib/stretch-preseed.cfg
index 03ba634..e3ac878 100644
--- a/lib/stretch-preseed.cfg
+++ b/lib/stretch-preseed.cfg
@@ -63,7 +63,7 @@ d-i partman-auto/expert_recipe_file string /partition_recipe
 #d-i apt-setup/contrib boolean true
 
 # Individual additional packages to install
-d-i pkgsel/include string bash dosfstools initramfs-tools rcn-ee-archive-keyring util-linux wget board-firmware net-tools
+d-i pkgsel/include string bash dosfstools initramfs-tools rcn-ee-archive-keyring util-linux wget board-firmware net-tools sudo
 # Whether to upgrade packages after debootstrap.
 # Allowed values: none, safe-upgrade, full-upgrade
 d-i pkgsel/upgrade select safe-upgrade