Scheduled Polygon Mainnet Node Upgrade [Bor v2.3.0 and Heimdall v0.4.0 release]

Incident Report for Alchemy

Resolved

This incident has been resolved.

Posted Sep 29, 2025 - 11:00 UTC

Investigating

Scheduled Start: Monday, September 29, 2025, at 08:00 AM UTC
Scheduled End: Monday, September 29, 2025, at 11:00 AM UTC
Impact: No downtime expected

Details:
Polygon mainnet has announced a scheduled hard fork on October 8, 2025, at 14:12 UTC. To prepare for this event, we will be upgrading our Polygon mainnet nodes ahead of time on September 29, 2025, starting at 08:00 AM UTC. The upgrade is expected to take approximately 3 hours.

This upgrade ensures our infrastructure is aligned with the Bor v2.3.0 and Heimdall v0.4.0 releases, part of the Rio hard fork for the Veblop upgrade.

You can find more information here: https://forum.polygon.technology/t/bor-v2-3-0-and-heimdall-v0-4-0-release-rio-hard-fork-for-veblop-upgrade/21310

Posted Sep 25, 2025 - 10:06 UTC

This incident affected: Polygon.