The update and upgrade modules are disabled. For obvious reasons, they can lead to unpredictable results.

If you know what you are doing, you can give a try to the upstream original update script below. It need a bit of tweaking in order to work in Debian though.

#!/usr/bin/env python
#
# WebSploit FrameWork Update Module
# Created By 0x0ptim0us (Fardin Allahverdinazhand)
# Email : 0x0ptim0us@Gmail.Com

import subprocess
import os
from core import wcolors

def update_websploit():
	print wcolors.color.GREEN + "[*]Updating Websploit framework, Please Wait ..." + wcolors.color.ENDC
	try:
		subprocess.Popen("cd /tmp;git clone https://github.com/websploit/websploit.git;cp -R websploit/ /usr/share;rm -rf /tmp/websploit/", stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True).wait()
	except Exception, e:
		print wcolors.color.RED + "[!] Update Failed."+ wcolors.color.ENDC
		pass

	print wcolors.color.GREEN + "[*]Update was completed successfully." + wcolors.color.ENDC
if __name__ == "__main__":
	update_websploit()

