# Required changes

You must make the changes specified in this section, if they apply to your application.

- Changes to the Liferay licensing model
  Prior to version 1.5, the first time you started the Discovery Framework, you were prompted to enter the Liferay license key.
- Changes required by JQuery and endeca-async upgrades
  Prior to version 1.4, the Discovery Framework used jQuery 1.2.6, which is the version of jQuery supplied by Liferay. jQuery was available in the `jQuery` variable.