Version Upgrade

I currently have version 2.4.2018 of the studio and robot . One of the members of the forum said that I needed to update my version of both. I received the following link for the root cause and solution, but I am unable to find in the link in the forum to upgrade my version of UiPath. I have an active license. Can you send me the link to upgrade my version of UiPath.?

( https://forum.uipath.com/t/cannot-set-unknown-member-uipath-core-activities-foreach-system-string-currentindex-solution/124787