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CryptoUpdated×2•Originally published 6 October 2026•Updated 7 October 2026•
1 min read

Ethereum Successfully Activates Glamsterdam Upgrade on Sepolia Testnet

Key Facts

1The Glamsterdam upgrade was successfully activated on the Sepolia testnet at epoch 353,024.
2Ethereum developers released an emergency Prysm software update to enhance gas limits ahead of activation.
3Sepolia serves as one of the final major rehearsals before the Glamsterdam activation on the Ethereum mainnet.

The Ethereum network successfully activated the Glamsterdam upgrade on the Sepolia testnet at epoch 353,024 on October 6, 2026. The upgrade is currently operating with a gas limit of 64 million, falling short of the 200 million target that developers aimed to enable via an emergency Prysm software update prior to activation.

Sepolia serves as a final rehearsal before the Glamsterdam activation on the Ethereum mainnet, which focuses on improving scalability and execution cost efficiency. Developers are monitoring network performance at the current capacity to ensure validator stability before proceeding with further implementation phases.

Latest Updates · 1

  1. Notable·

    Update: Ethereum developers have set a tentative date of October 27, 2026, to begin testing the Glamsterdam upgrade on the Hoodi testnet. The final activation on the Ethereum mainnet is expected to take place within the fourth quarter of 2026, following the completion of current testing phases.