Here is how you can change your site's jQuery version:
1. Select Settings (gear icon) in the Dashboard navigation bar.
2. Hover over Extras under the Settings header.
3. Select Development:
Note: Changing the version of the jQuery library included with your site is not recommended or supported: please only consider doing this if you have very specific needs (e.g., requirements of a custom plugin you're including) and can test your site thoroughly on various browsers and devices. SpaceCraft will periodically update all included jQuery versions to the most recent patch/revision number for all versions available, without notice.