What is the Pasteur hard fork?

A BNB Chain client upgrade activated on September 14, 2026, that raises the per-block gas capacity by 28%. It's a scaling step; it doesn't change consensus, block times, or the BEP-95 fee-burn design.

Does Pasteur affect BNB tokenomics?

Not directly. Tokenomics rules are unchanged. Indirectly, if the extra capacity gets filled with real transactions, more gas gets burned per block under BEP-95, which reduces net BNB supply over time.

Do users need to do anything?

No. End users don't take any action. Wallets and dApps continue working normally. Validators and node operators are the parties running the upgraded client.

What is the 90M gas target?

A stated roadmap goal for BNB Chain's per-block gas ceiling. Pasteur doesn't reach it. It's the next milestone after this upgrade, pending validator readiness and network stability at higher loads.

BNB Chain Ships Pasteur Hard Fork, Lifting Per-Block Gas Capacity 28%

Market impact

BNB itself didn't get a live price snapshot in the incoming data block, so a specific dollar move isn't grounded here. The read on the token from a fundamentals lens is straightforward: higher gas capacity means more gas burned per block at the same utilization, which feeds directly into BEP-95's fee-burn destruction of BNB supply. If activity fills the new headroom, net BNB issuance moves lower.

The second-order beneficiaries are the applications that were routinely hitting the old gas ceiling during peak windows. PancakeSwap's v3 pools, the larger perp DEX venues on the chain, and NFT mints that historically clogged blocks all get room to run. The headline looks unambiguously constructive. The flow picture depends on whether builders actually push new load into the newly available space, or whether the extra capacity sits idle.

BNB Chain activated its Pasteur hard fork on Sunday, lifting per-block gas capacity by 28% and setting the stage for a further push toward a 90 million gas ceiling, per a Blockchain.News report. The upgrade landed early UTC and targets throughput headroom for the network's busiest DeFi and gaming contracts. Validators running the updated client began producing heavier blocks within the first epoch after the fork went live.

By Daniel Park· AI-assisted· On-chain analyst

What happened

BNB Chain executed the Pasteur hard fork on Sunday, September 14, expanding the per-block gas ceiling by 28% across the network, according to Blockchain.News. The fork is a coordinated client upgrade for BNB Smart Chain validators, and blocks produced after the activation height began carrying the new limit immediately. The upgrade is a scaling step rather than a consensus rewrite: no changes to BEP-95 fee burn mechanics, no shift in block time targets, and no validator set changes accompany it. It's a capacity move.

The 28% bump is framed by BNB Chain contributors as an interim milestone. The stated roadmap points to a 90 million gas per block target for validators willing and technically able to run it, though the network isn't there yet. That headroom would put BNB Chain's per-block capacity comfortably above Ethereum mainnet's current 30M gas target and closer to the throughput profile of high-performance L2s. For now, Pasteur delivers the first leg of that climb.

Why it matters

Gas capacity is the ceiling on how much computation a chain can pack into a single block. Raising it 28% means more transactions per second at the same fee level, or the same transaction count at lower average fees. For BNB Chain, whose dominant traffic sits in DeFi swaps, perp DEX order flow, and on-chain gaming, that translates directly into cheaper execution at peak load.

The timing matters. BNB Chain has spent 2026 defending its share of retail DeFi against Base and Solana, both of which have leaned on throughput-first narratives. Shipping a live capacity increase, rather than a testnet demo, is the sort of concrete deliverable that shows up in TVL and DEX volume charts within weeks, not quarters. The upgrade also lands ahead of what has historically been a strong Q4 for BNB Chain gaming activity.

Market impact

BNB Chain Ships Pasteur Hard Fork, Lifting Per-Block Gas Capacity 28%

What happened

Why it matters

Market impact

What to watch

Disclaimer

Key takeaways

Frequently asked

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