diff --git a/templates/debian.Dockerfile b/templates/debian.Dockerfile
index 5d8b036..0443523 100644
--- a/templates/debian.Dockerfile
+++ b/templates/debian.Dockerfile
@@ -71,8 +71,8 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends cr
 
 # needs to be after update-initramfs
 {{- if not .Grub }}
-RUN mv $(find /boot -name 'vmlinuz-*') /boot/vmlinuz && \
-      mv $(find /boot -name 'initrd.img-*') /boot/initrd.img
+RUN mv $(ls -t /boot/vmlinuz-* | head -n 1) /boot/vmlinuz && \
+      mv $(ls -t /boot/initrd.img-* | head -n 1) /boot/initrd.img
 {{- end }}
 
 RUN apt-get clean && \
diff --git a/templates/ubuntu.Dockerfile b/templates/ubuntu.Dockerfile
index 1589379..f5db285 100644
--- a/templates/ubuntu.Dockerfile
+++ b/templates/ubuntu.Dockerfile
@@ -62,8 +62,8 @@ RUN DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends cr
 
 # needs to be after update-initramfs
 {{- if not .Grub }}
-RUN mv $(find /boot -name 'vmlinuz-*') /boot/vmlinuz && \
-      mv $(find /boot -name 'initrd.img-*') /boot/initrd.img
+RUN mv $(ls -t /boot/vmlinuz-* | head -n 1) /boot/vmlinuz && \
+      mv $(ls -t /boot/initrd.img-* | head -n 1) /boot/initrd.img
 {{- end }}
 
 RUN apt-get clean && \