Polygon Heimdall v2 upgrade set for July 10 aims to cut finality to 5 seconds and address technical debt

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Quick Take

  • Polygon is set to implement the Heimdall v2 upgrade on July 10.
  • The upgrade is described as the most complex hard fork since Polygon PoS launched in 2020.
  • Heimdall v2 aims to reduce finality to around five seconds and eliminate legacy technical debt.

Polygon's POL token rose more than 6% ahead of the network’s major Heimdall v2 upgrade set to take place on July 10.

According to The Block's price page, POL gained 6.2% in the past 24 hours, trading at $ 0.20 at the time of writing. POL has a market capitalization of $1.8 billion.

POL outperformed the broader crypto market, with The Block's GMCI 30 index, which measures the performance of the top 30 cryptocurrencies, gaining 1.7%.

The Polygon network is expected to run its Heimdall v2 migration on July 10, which would be "the most technically complex hard-fork Polygon PoS has seen since its launch in 2020," said Polygon Foundation CEO Sandeep Nailwal in a Tuesday post on X.

The upgrade is expected to shed its old technical debt from the 2018 to 2019 era and shorten finality to about five seconds, according to Nailwal. 

Polygon previously noted that the estimated time for script execution (excluding potential troubleshooting or preparation) would be roughly 30 minutes on the mainnet.

"Most validators have already upgraded but in case you haven't yet, test early, spread the word, and ping us if you hit snags," said Nailwal.


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© 2025 The Block. All Rights Reserved. This article is provided for informational purposes only. It is not offered or intended to be used as legal, tax, investment, financial, or other advice.

AUTHOR

Timmy Shen is an Asia editor for The Block. Previously, he wrote about crypto and Web3 for Forkast.News from Taiwan after spending more than three years in Beijing covering finance, entertainment business and current affairs at Caixin Global and Chinese tech at TechNode. His China-related reporting has also appeared in The Guardian. When he's not chasing headlines, you'll find him savoring hot pot and shabu shabu in a Taipei local haunt. Timmy holds an MS degree from Columbia University Graduate School of Journalism. Send tips to [email protected] or get in touch on X/Telegram @timmyhmshen.

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To contact the editor of this story: Vishal Chawla at [email protected]

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