You can use the MiKTeX update wizard to install the latest MiKTeX updates.
To start the wizard, click → → → . The wizard asks you to choose an update source:

Choose to install updates from a remote package repository. Choose Local folder, if you are mirroring a remote package repository on your computer. Chosse MiKTeX CD, if you have a new edition of the MiKTeX CD. Click to continue.
If you have chosen to install packages from a remote package repository, MiKTeX Update Wizard lists the available package repositories. Choose the nearest repository:

Click to continue.
A list of updateable packages is displayed. Choose the packages you wish to update:

Click to start the update process.
MiKTeX Update Wizard now updates the selected packages:

When the update operation is complete, click and then .