Ethereum developers released an emergency software update for the Prysm validator client shortly before a Sepolia test of the planned Glamsterdam upgrade, ensuring participating validators automatically use a 200 million gas limit instead of the network’s previous 60 million setting.
The change is designed to preserve the purpose of the test: measuring whether Ethereum’s validators can reliably process blocks that are more than three times larger than Sepolia’s earlier default. According to CoinDesk, the update, Prysm version 7.2.1, was released late Monday, ahead of Glamsterdam’s activation on Sepolia at about 13:53 UTC on Oct. 6.
Without the new software, or a manual configuration change, some validators could have continued proposing blocks with a 60 million gas limit. That would have weakened the experiment by leaving the test network with a mixture of old and new capacity settings rather than consistently evaluating the larger block size.
What the update changes
Prysm is software used by validators to operate on the Ethereum network. Validators participate in confirming transactions and proposing new blocks. The latest version is intended to make those validators automatically adopt the 200 million gas limit when the Glamsterdam test begins on Sepolia.
Gas is Ethereum’s measure of the computing work required to carry out transactions and other operations. A block’s gas limit determines how much computational activity can be included in that block. Raising the limit creates room for more transactions or more complex operations at once, but it also increases the workload for the computers that store, verify and process the chain.
Sepolia is an Ethereum test network used to rehearse changes before they are considered for the main network. The tokens used there have no real value. In this case, the test will raise Sepolia’s limit from roughly 60 million gas to 200 million gas.
The 200 million setting applies only to Sepolia. Glamsterdam has not activated on Ethereum’s main network, and the test result does not by itself establish that the same limit will be adopted there.
Why the capacity test matters
Ethereum developers have been increasing block capacity in stages rather than moving immediately to a larger limit on the main network. Each increase requires testing whether validators can keep up without making operation of the network too demanding or expensive.
The Sepolia trial is intended to provide evidence about how validators perform when handling blocks more than three times the size of the previous default. Developers will use the results to help determine what level of capacity may be appropriate for Ethereum itself.
Greater block capacity could eventually provide more space for activity such as trades, stablecoin transfers and other applications. When demand for block space exceeds the available limit, users and applications compete for inclusion, which can put upward pressure on transaction fees. However, the source material does not state that the test will produce a particular fee outcome or that a specific capacity will ultimately be selected for the main network.
The immediate issue was therefore not a change to Ethereum’s live network, but the reliability of the test itself. If validators continued proposing blocks at 60 million gas, developers would receive a less complete picture of how the network behaves under the intended 200 million-gas workload.
Current market picture
Moneyiar market data at 10:09 a.m. on Oct. 7, 2026, showed Ethereum at $2,582.9119107154, down 4.69% over 24 hours and 3.96% over seven days.
Other listed cryptoassets were also lower over those periods. Shiba Inu was priced at $0.0000054895, down 6.36% in 24 hours and 5.52% over seven days. Uniswap stood at $8.0408970368, down 9.36% over 24 hours and 9.07% over seven days. Moneyiar’s supplied data listed Polygon with its unit as دلار but did not include a price or percentage change.
These market figures describe trading conditions after the Sepolia rehearsal and are separate from the technical test. The test concerns validator performance and Ethereum’s potential future capacity; it does not represent an activation of the 200 million-gas limit on the main network.
