Polygon Completes Major Heimdall v2 Network Upgrade

⚡ 5 Seconds Changes Everything

By Polygon
Jul 14, 2025, 4:13 PM
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Polygon has successfully implemented its Heimdall v2 upgrade on mainnet, marking a significant technical milestone.​ Key improvements include:

  • Reduced finality time from ~1 minute to ~5 seconds
  • Enhanced network stability
  • Modernized core infrastructure

This follows the recent Bhilai Hardfork which increased throughput to 1000 TPS and reduced gas fee volatility.​ The next planned upgrade aims to achieve single block instant finality with ~5000 TPS.​

Learn more about the upgrade

Sources

Bhilai Hardfork is live today on Polygon! • increasing throughput by 50% capacity, enabling 1000 TPS • smoothing out gas fees, reducing volatility during high demand • integrating Ethereum’s Pectra EIPs, supporting account abstraction via EIP-7702

Sandeep | CEO, Polygon Foundation (※,※)
Sandeep | CEO, Polygon Foundation (※,※)
@sandeepnailwal

PRODUCT GO LIVE ANNOUNCEMENT 🚢 1000 TPS is HERE!! With the Bhilai hardfork on mainnet, the first milestone to gigagas has been achieved: Polygon PoS is already getting up to 1000+ TPS in production!! Block gas limits have increased from 30M to 45M, increasing throughput by

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ICYMI: Polygon PoS supports @ethereum's Pectra upgrade for better user and developer experiences. Read more on the Bhilai Hardfork below.

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Polygon
Polygon
@0xPolygon

We’re in shipping mode until further notice 🚢 The roadmap to gigagas continues with the next milestone landing on mainnet by mid July: Heimdall v.2 migration to decrease blocktimes (hello ~5s finality) and modernize core infra. More here: polygon.technology/blog/first-mil…

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The most complex upgrade in Polygon history is live! Heimdall v2 brings: • finality down to ~5 seconds (from ~1min) • better network stability • modern, future-proof core infrastructure The team worked diligently with node operators to ensure a smooth upgrade, and despite a

Sandeep | CEO, Polygon Foundation (※,※)
Sandeep | CEO, Polygon Foundation (※,※)
@sandeepnailwal

Product Announcement 🚢 ~5 Second Finality + Modernized Core Infra on Polygon PoS Polygon PoS engineers have completed deployment of Heimdall v2 to mainnet, upgrading the consensus layer, decreasing large reorgs, and bringing transaction finality to ~5 seconds (down from 1-2

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