diff --git a/config/rootfiles/core/177/update.sh b/config/rootfiles/core/177/update.sh
index a3a141dae..43f9a02f6 100644
--- a/config/rootfiles/core/177/update.sh
+++ b/config/rootfiles/core/177/update.sh
@@ -59,6 +59,16 @@ if [ -f /var/ipfire/proxy/enable ]; then
 	/etc/init.d/squid restart
 fi
 
+# Rebuild initial ramdisk to apply microcode updates
+dracut --regenerate-all --force
+KVER="xxxKVERxxx"
+case "$(uname -m)" in
+	aarch64)
+		mkimage -A arm64 -T ramdisk -C lzma -d /boot/initramfs-${KVER}-ipfire.img /boot/uInit-${KVER}-ipfire
+		# dont remove initramfs because grub need this to boot.
+		;;
+esac
+
 # This update needs a reboot...
 touch /var/run/need_reboot