Before upgrading make sure to verify your Safe(s) do not have signers that won't be able to sign transactions post upgrade Compatible • All EOAs: Open the address in Etherscan > EOAs are labeled as "Address {0x...}" • Smart accounts are labeled as "Contract {0x...}" • Safe accounts ≥v1.3.0 • Other smart accounts: Verify it implements "isValidSignature(bytes32, bytes)" https://safe.global/blog/safe-contract-version-1-5-0#:~:text=What%20to%20check%20before%20upgrading