# Announcing Etherlink 6.6: a security hardening kernel upgrade proposal

**URL:** <https://forum.tezosagora.org/t/announcing-etherlink-6-6-a-security-hardening-kernel-upgrade-proposal/7137>\
**Category:** Research and Development\
**Created:** [July 16, 2026, 8:42am UTC](https://forum.tezosagora.org/t/announcing-etherlink-6-6-a-security-hardening-kernel-upgrade-proposal/7137 "2026-07-16T08:42:31Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![NomadicLabs](https://forum.tezosagora.org/user_avatar/forum.tezosagora.org/nomadiclabs/32/763_2.png) [@NomadicLabs](https://forum.tezosagora.org/u/NomadicLabs)\
**Post date:** [July 16, 2026, 8:42am UTC](https://forum.tezosagora.org/t/announcing-etherlink-6-6-a-security-hardening-kernel-upgrade-proposal/7137/1 "2026-07-16T08:42:31Z")

</div>

_This is a joint post from Nomadic Labs, TriliTech, and Functori._

A new Etherlink kernel upgrade proposal, **Etherlink 6.6** , has just been submitted to Etherlink’s Fast governance mechanism.

This is a **security hardening kernel** upgrade proposal.

Should the governance vote be successful, Etherlink 6.6 will activate on mainnet on **Saturday, 18 July 2026**.

🙏 Thank you for your continued support for Etherlink.

📅 **CTA: Please upvote Etherlink 6.6**

The kernel upgrade proposal (0083d8142e9c5f2a35ead6eb31d6344f3803f90eacb03ccfb6c482df353f85908a) has already been injected in the current proposal period.

**Proposal period vote:** fast governance period 509, spanning between L1 levels [#14,083,489](https://tzkt.io/14083489) (July 16 08:31 UTC) and [#14,088,288](https://tzkt.io/14088288) (July 16 16:36 UTC).

**Promotion period vote:** fast governance period 510, spanning between L1 levels [#14,088,289](https://tzkt.io/14088289) (July 16 16:36 UTC) and [#14,093,088](https://tzkt.io/14093088) (July 17 00:40 UTC).

👉 Remember that Etherlink fast governance periods last ~8 hours, which means bakers would need to vote up to two times within 12 hours to participate in both votes.

Bakers can cast their votes in a few clicks with Etherlink’s governance [explorer UI](https://governance.etherlink.com/), or using [TezGov](https://gov.tez.capital/). We provide further voting instructions to vote with Octez CLI below.

Don’t hesitate to reach out if you need our help to make sure you can cast your votes in time.

## Annex: voting instructions

Bakers can cast their votes in a few clicks with Etherlink’s governance [explorer UI](https://governance.etherlink.com/), or using [TezGov](https://gov.tez.capital/). It is also possible to vote using Octez CLI, with the following commands:

**Proposal Period (fast governance period 509)**

The Proposal period vote will start at L1 level [#14,083,489](https://tzkt.io/14083489) (July 16 08:31 UTC) and will run until [#14,088,288](https://tzkt.io/14088288) (July 16 16:36 UTC).

You can upvote the Etherlink 6.6 kernel upgrade proposal using the following Octez CLI command:

```auto
octez-client call KT19oUVQPnVLuUBYXrBVd46WJnNAMpqkKSwo from <baking_key or voting_key> \
  --entrypoint "upvote_proposal" \
  --arg "0x0083d8142e9c5f2a35ead6eb31d6344f3803f90eacb03ccfb6c482df353f85908a" \
  --burn-cap 0.11

```

**Promotion Period (fast governance period 510)**

If the Proposal period is successful, the Promotion period would span between L1 levels [#14,088,289](https://tzkt.io/14088289) (July 16 16:36 UTC) and [#14,093,088](https://tzkt.io/14093088) (July 17 00:40 UTC).

You can vote for the Etherlink 6.6 kernel upgrade proposal using the following Octez CLI command:

```auto
octez-client call KT19oUVQPnVLuUBYXrBVd46WJnNAMpqkKSwo from <baking_key or voting_key> \
  --entrypoint "vote" --arg '"yea"' \
  --burn-cap 0.11

```

See [this documentation entry](https://docs.etherlink.com/governance/kernel-governance) for further instructions on how to participate in Etherlink’s governance, and don’t hesitate to reach out if you need our assistance to cast your votes.