Unable to upgrade to latest version

/usr/bin: sudo apt-get upgrade

Reading package lists... Done

Building dependency tree       

Reading state information... Done

Calculating upgrade... Done

The following packages have been kept back:

  mariadb-client-10.0 mariadb-client-core-10.0 mariadb-server mariadb-server-10.0

The following packages will be upgraded:

  mariadb-server-core-10.0

1 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.

Need to get 0 B/4,728 kB of archives.

After this operation, 1,200 kB of additional disk space will be used.

Do you want to continue? [Y/n] y

(Reading database ... 297462 files and directories currently installed.)

Preparing to unpack .../mariadb-server-core-10.0_10.0.20-0ubuntu0.15.04.1_amd64.deb ...

Unpacking mariadb-server-core-10.0 (10.0.20-0ubuntu0.15.04.1) over (10.0.17+maria-1~utopic) ...

dpkg: error processing archive /var/cache/apt/archives/mariadb-server-core-10.0_10.0.20-0ubuntu0.15.04.1_amd64.deb (--unpack):

 trying to overwrite '/usr/bin/innochecksum', which is also in package mariadb-client-10.0 10.0.17+maria-1~utopic

dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)

Errors were encountered while processing:

 /var/cache/apt/archives/mariadb-server-core-10.0_10.0.20-0ubuntu0.15.04.1_amd64.deb

E: Sub-process /usr/bin/dpkg returned an error code (1)