Title: Update to filtered query parameters
Author: WordPress VIP Documentation
Published: January 9, 2026

---

 1. [Changelog](https://docs.wpvip.com/changelog/)
 2. [Infrastructure](https://docs.wpvip.com/changelog/infrastructure/)
 3. Update to filtered query parameters

# Update to filtered query parameters

---

 09 January 2026

19:23:47 GMT+0000

 [ Infrastructure ](https://docs.wpvip.com/changelog/infrastructure/)

 [ Permalink  ](https://docs.wpvip.com/changelog/infrastructure/update-to-filtered-query-parameters/)

The `ttclid` query parameter has been added to the list of [query parameter values that are filtered by the page cache](https://docs.wpvip.com/caching/page-cache/query-parameter-caching/#h-filtered-query-parameters)
and therefore not cached as variants.