how can i update hashcat on bacntrack ?

[Wasker]

I tried but does not work
root@bt:/pentest/passwords/hashcat# ./hashcat-cli32.bin -m 0 /root/md5.txt /root/passwords.txt -o /root/out.txt
i get that Enter YES in uppercase if you accept this EULA:
i enter yes and out.txt is empity
sorry for my english !