> For the complete documentation index, see [llms.txt](https://docs.sonicsvm.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sonicsvm.org/resources/sonic-svm-testnet-upgrade-notice.md).

# Sonic SVM Testnet Upgrade Notice

We will be upgrading our testnet to Agave 3.0 on March 4th starting at 12:00 UTC. The upgrade is expected to take no more than 30 minutes.

#### **Affected Endpoint**

* [https://api.testnet.sonic.game](https://api.testnet.sonic.game/)

#### What’s New in Agave 3.0

* Consensus upgraded to Alpenglow for significantly faster finality
* CPI nesting limit increased to 8 (previously 4)
* Per-account CU limit increased by 40% of block CU
* Block compute limit increased to 100M CU
* AccountDb rewritten:
  * Merkle trees replaced with LT hash
  * Optimized to utilize io\_uring
  * Multiple additional performance improvements

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#### Partner Support Contacts

For upgrade assistance or any questions, please reach out via:

Telegram:

* Jonas ([@jesusjonas](https://t.me/jesusjonas))
* Collins ([@collinsabt](https://t.me/collinsabt))
* Ivan ([@i1i1r](https://t.me/i1i1r))

X (Twitter):

* [@SonicSVM<br>](https://twitter.com/SonicSVM)

***

Please plan accordingly if you rely on the affected RPC endpoint during the upgrade window.

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