Sei Urges USDC.n Holders to Migrate Before SIP-3 Upgrade

• Sei’s SIP-3 upgrade in March 2026 will end support for Cosmos-native assets like USDC.n.
• More than $1.4M in USDC.n must be swapped or migrated to native USDC before the deadline.
• DeFi users must withdraw USDC.n from Yei and Takara Lend to avoid loss of access.

Sei Labs has issued a notice to users holding USDC.n on the Sei Network, urging them to swap or migrate the token to native USDC ahead of a planned network upgrade scheduled for late March 2026. The guidance follows preparations for the SIP-3 upgrade, which is expected to transition Sei into an EVM-only chain and discontinue support for Cosmos-native assets such as USDC via Noble.

Check your Sei wallet: if you hold USDC.n (USDC via Noble), you should move to native USDC before the end of March 2026.

The SIP-3 upgrade (expected on mainnet in late March) will effectively make Sei an EVM-only chain, and Cosmos…

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