It’s a good idea, once you have installed the Raspbian OS on your Raspberry Pi, to check for updates to the software, and periodically. Especially before installing other software.
To do an update, open the terminal (click on the little monitor icon in the taskbar) and type in, sudo apt-get update and hit enter. Once it’s done, it will go to the command prompt (pi@raspberrypi), then type in sudo apt-get dist-upgrade and hit enter. Once that is done, reboot your Pi. Then your OS should be all updated!
If you want to learn more about other update settings, like if you are running low on storage space, on the sd card, visit the Raspberry Pi website, here!