linux - GLIBC_2.14' not found - How to update -

im trying use minergate, when want start it, gives me error:

minergate-cli: /lib/x86_64-linux-gnu/libc.so.6: version `glibc_2.14' not found (required minergate-cli)

and

minergate-cli: /lib/x86_64-linux-gnu/libc.so.6: version `glibc_2.15' not found (required /opt/minergate-cli/lib/libqt5core.so.5)

i did "sudo apt-get update" , upgrade, did nothing. dont know next, got ? :)

edit: have linux:

linux bukalamaksymilian 2.6.32-042stab108.3 #1 smp thu jun 11 21:06:20 msk 2015 x86_64 gnu/linux