Heimdall v0.10.0 <>Ithaca HF - Mainnet

Announcements
1

Hello Everyone,

We have released heimdall v0.10.0 for Polygon mainnet. This release includes mainly improvements and fixes.
It also defines the Ithaca HF, with activation heights:

  • Amoy at block 40,776,000 (2026-07-20 ~14:00 UTC) :white_check_mark: completed
  • Mainnet at block 50,185,000 (2026-07-29 ~14:00 UTC)

Action required: All node operators must upgrade as soon as possible to ensure compatibility and network safety.

Steps to upgrade

  1. Stop heimdall service
    sudo service heimdalld stop
  2. Install heimdall with a version tag, network name (mainnet), and node type (sentry, validator).
    3.Replace the node type
    curl -L https://raw.githubusercontent.com/maticnetwork/install/heimdall-v2/heimdall-v2.sh | bash -s – v0.10.0 mainnet sentry
    (swap sentry → validator if this is a validator node)
  3. Check heimdall version
    sudo /usr/bin/heimdalld version
    It should print 0.10.0
  4. Restart heimdall service
    sudo service heimdalld start

Changelog: https://github.com/0xPolygon/heimdall-v2/compare/v0.9.0...v0.10.0

Docker Images
You can find the latest docker images here: https://hub.docker.com/r/0xpolygon/heimdall-v2/tags

Thanks,
Polygon Team

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2

Listing the activation block heights for both Amoy and mainnet with approximate UTC times makes this release easy to plan around. Operators may want to confirm the new version is running cleanly well before the activation height and keep an eye on the node for a while after the fork passes, in case a late upgrade or a misconfigured sentry shows up only at that point.