# THORChain Targets Oct. 23 Upgrade to Restore SOL and ZEC Trading By Simon Yoon Canonical URL: https://www.tokenpost.com/news/technology/34969 Published: 2026-10-19T18:57:52.000Z Updated: 2026-10-19T18:57:52.000Z Section: Technology > The v3.21.0 release also addresses paused network functions. Remaining Monero (XMR) fixes are planned for v3.21.1, which has no set release date. THORChain has released v3.21.0 to restore Solana (SOL) and Zcash (ZEC) trading after separate faults halted both markets, while other fixes aim to reopen paused network functions. A new Solana transaction type disrupted SOL trading. A separate error in matching outbound transactions triggered a vault slash and stopped ZEC trading, but caused no loss of funds. The interruption follows [THORChain’s earlier completion of native Zcash integration]() for cross-chain swaps. The release also fixes SwapKit affiliate fee payments, a step intended to let SwapKit restore THORChain access for multiple integrators. Repairs tied to a recent vulnerability in Rujira’s FIN contract are intended to bring its application layer back online. Another fix targets a bug that caused excessive growth in network state and paused limit swaps. The upgrade introduces dynamic pricing for memoless-swap registration to address spam; the change concerns registration, rather than swap prices. A new streaming yield feature would let bond providers send part of their earnings directly to a wallet without waiting for a node operator to rotate out. It requires activation through Mimir. Monero (XMR) support is outside this release. Remaining XMR fixes are planned for v3.21.1, with no set release date. The network is expected to pause for the v3.21.0 upgrade at block 28,366,100, projected for Oct. 23. ## Links in this article - [THORChain’s earlier completion of native Zcash integration](https://www.tokenpost.com/news/technology/27558)