Terra Classic Proposal to Upgrade Terrad Client to v3.6.0: What It Means
The Terra Classic community is currently voting on a new on-chain proposal to upgrade the Terrad client to version v3.6.0 (upgrade name: v13).
This proposal aims to align Terra Classic with the latest Cosmos SDK standards, improve smart contract compatibility, and enhance validator performance through key technical updates.
If approved, the upgrade will take place on October 20, 2025, at approximately 2:45 PM UTC, when the chain halts automatically at block height 25,619,230.
Validators will then install the new client before block production resumes.
Summary of v3.6.0 Technical Changes
| Change | Description | Impact |
|---|---|---|
| IBC Tax Calculation Fix | Corrects tax handling for reverse charge contracts within IBC transactions. | Ensures accurate cross-chain tax logic and smoother IBC operations. |
| Unfork Wasmd Package (Phase 2) | Migrates Terra Classic to the mainstream wasmd v0.46.0, replacing the custom fork. | Improves compatibility with Cosmos networks and modern smart contracts. |
| CI and API Regression Updates | Adds tests for checking API regressions and updates continuous integration configurations. | Improves testing reliability and codebase stability. |
| Testnet & Mainnet Upgrade Height Updates | Adjusts upgrade heights to prepare for smooth migration. | Reduces risk of mismatch or desynchronization during upgrade. |
| Improved Debug Logs | Enhances log info for debugging. | Helps developers diagnose and fix issues faster. |
In essence, the v3.6.0 upgrade modernizes Terra Classic’s architecture, strengthens its developer environment, and improves interoperability within the Cosmos ecosystem.
Proposal and Voting Details
| Proposal Title | Terrad Client Upgrade to v3.6.0 (v13) |
| Upgrade Block Height | 25,619,230 |
| Estimated Upgrade Time | October 20, 2025, 2:45 PM UTC |
| Voting Period | October 4 – October 11, 2025 |
| Chain Halt & Restart | Chain halts at target block height, validators install new version, then resume. |
Current Voting Status
| Turnout | 29.20% / 40% quorum required |
| Yes | 99.83% (277.29B LUNC) |
| Abstain | 0.17% (472.06M LUNC) |
| No | 0% |
| No with Veto | 0% |
| Expected Result | Not passing yet — quorum not reached |
| Voting Ends | October 11, 2025, 14:02:40 UTC |
Although the community strongly supports the proposal, participation remains below the 40% quorum threshold.
Validators and LUNC holders are encouraged to vote before the deadline to ensure the upgrade proceeds as planned.
Validator and Delegator Participation
| Group | Yes | Abstain | No / No with Veto | Total Participants |
|---|---|---|---|---|
| Validators | 19 (99.83%) | 1 (0.17%) | 0 | 20 / 110 |
| Delegators | 170 (99.99%) | 2 (0.01%) | 0 | 172 |
Testing and Rollback Plan
The release candidate v3.6.0-rc.0 was tested on the rebel-2 testnet on September 4, 2025, confirming upgrade stability and compatibility.
In the unlikely event of an issue, validators may temporarily revert to v3.5.0 under the same upgrade name (v13) while awaiting a patch.
Official Resources:
Conclusion
The Terra Classic v3.6.0 upgrade represents a key step in the network’s evolution.
By merging with the mainstream wasmd framework and refining IBC operations, the network achieves better stability, interoperability, and efficiency.
Community members are encouraged to vote before October 11, 2025, to help Terra Classic move forward with this critical technical upgrade.
