diff --git a/assemble_image.sh b/assemble_image.sh
index aad3272765b5891d0cf6b78bda9ad2d9e2c87f95..723fb5d9ce925845f4e7ca84a1ae81bcb177367a 100755
--- a/assemble_image.sh
+++ b/assemble_image.sh
@@ -4,8 +4,8 @@ set -e
 set -x
 
 image_size="7G"
-kubuntu="kubuntu-18.04.2-desktop-amd64.iso"
-xubuntu="xubuntu-18.04.2-desktop-amd64.iso"
+kubuntu="kubuntu-18.04.3-desktop-amd64.iso"
+xubuntu="xubuntu-18.04.3-desktop-amd64.iso"
 workspace="/workspace"
 
 # mtools, ddrescure, fdisk, grub, 7z