# unmet dependencies on ubuntu 16.04 **URL:** \ **Category:** Percona Toolkit\ **Created:** [February 8, 2018, 5:30am UTC](https://forums.percona.com/t/unmet-dependencies-on-ubuntu-16-04/6180 "2018-02-08T05:30:43Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![cwhsu](https://avatars.discourse-cdn.com/v4/letter/c/67e7ee/32.png) [@cwhsu](https://forums.percona.com/u/cwhsu)\ **Post date:** [February 8, 2018, 5:30am UTC](https://forums.percona.com/t/unmet-dependencies-on-ubuntu-16-04/6180/1 "2018-02-08T05:30:43Z")
Hi, I want to use pt-online-schema-change on a remote server, hence, I try to install percona-toolkit. However, both using deb file or apt install would have unmet dependencies. Do you have any suggestion about this? I am a bit worry about the unmet dependencies because I don’t want to break the dependencies accidentally. I follow the document to update apt repo: wget [https://repo.percona.com/apt/percona-release\_0.1-4.$](https://repo.percona.com/apt/percona-release_0.1-4.%24)(lsb\_release -sc)\_all.deb sudo dpkg -i percona-release\_0.1-4.$(lsb\_release -sc)\_all.deb sudo apt update sudo apt-cache search percona sudo apt-get install percona-toolkit Unmet message when installing percona-toolkit: Reading package lists… Done Building dependency tree Reading state information… Done percona-toolkit is already the newest version (3.0.6-1.xenial). You might want to run ‘apt-get -f install’ to correct these: The following packages have unmet dependencies: percona-toolkit : Depends: libdbi-perl (\>= 1.13) but it is not going to be installed Depends: libdbd-mysql-perl but it is not going to be installed or libdbd-mysql-5.1-perl but it is not installable Depends: libterm-readkey-perl (\>= 2.10) but it is not going to be installed Depends: libio-socket-ssl-perl but it is not going to be installed E: Unmet dependencies. Try ‘apt-get -f install’ with no packages (or specify a solution).