Sei v6.4 is now stay on mainnet. The replace brings IBC disable functionality because the chain strikes towards an EVM-only future beneath SIP-3.
Sei Labs has rolled out v6.4 on mainnet. The replace marks a big step within the community’s ongoing SIP-3 migration.
At its core, v6.4 introduces the protocol-level capability to disable inbound IBC transfers. IBC is Cosmos’ native interoperability protocol. Sei Labs notes that the change won’t take impact till a separate governance proposal passes.
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Sei v6.4 and the IBC Disable Functionality
The new launch doesn’t instantly reduce off IBC transfers. As a substitute, it provides the community the technical groundwork to take action when governance approves the follow-on proposal.
Sei Labs has confirmed it’ll publish that proposal individually, giving the neighborhood advance discover.
As soon as activated, customers will now not bridge Cosmos-native property into Sei. This impacts property like Nobel USDC, Kava USDT, and Wormhole-wrapped tokens.
The scope of impression is broad, touching a number of DeFi positions and token holdings throughout the community.
Sei Labs has been clear concerning the phased rollout. The workforce says extra releases will observe, concentrating on outbound IBC transfers and Sei’s native oracle resolution. These upgrades are anticipated within the coming months.
Sei v6.4 is stay on mainnet. This is what it means for the SIP-3 transition:
v6.4 provides the power to disable inbound IBC transfers on Sei. IBC is Cosmos’ interop protocol. As soon as activated through governance, customers will now not be capable of bridge CosmWasm property onto Sei.
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— Sei Labs (@Sei_Labs) April 13, 2026
SIP-3 Migration: What Sei Customers Must Do Now
Sei Labs is urging customers holding non-SEI IBC property to behave early.
Ready till governance prompts the change might depart customers with restricted choices. The workforce has outlined three clear steps for affected holders.
First, customers ought to swap IBC property for EVM-native equivalents.
Sei Labs factors to platforms like Saphyre and Symphony for smaller quantity conversions, although it doesn’t endorse both. Slippage might range primarily based on liquidity and market circumstances.
Second, customers can bridge IBC property again to their origin chains. Sei Labs mentions Skip:Go as a frontend possibility, once more with out endorsing it.
Third, customers ought to unwind any DeFi positions that depend on IBC tokens earlier than the governance deadline hits.
The Broader Push Towards an EVM-Solely Sei Community
The SIP-3 proposal handed final Could.
Sei’s neighborhood voted to deprecate CosmWasm and native Cosmos transactions totally. The objective is a streamlined, EVM-only chain. v6.4 is the newest piece of that broader plan.
Earlier, v6.3 introduced staking through EVM to Sei. Now, v6.4 provides the IBC disable functionality. Every launch chips away on the Cosmos-native layer. Sei Labs says extra are coming.
The transition displays a transparent strategic course. Sei is transferring away from its Cosmos roots and committing totally to EVM infrastructure.
For customers nonetheless holding legacy property, the window to behave is open however narrowing.