Polygon Labs urges node operators to upgrade after Austin and Kyoto hardforks

Polygon Labs has issued an urgent client-upgrade notice following the completion of the Austin and Kyoto hardforks, according to CryptoSlate. The upgrades addressed separate risks affecting the network, including block stalls, peer crashes and validator operations. With the hardfork changes now completed, nodes that continue running older client binaries are no longer aligned with the canonical consensus. The notice highlights the need for affected node operators to move to the appropriate upgraded software to remain within the network’s accepted consensus rules. The update is relevant to the Polygon network and its associated assets, including MATIC and POL. CryptoSlate reported the notice on Aug. 29, 2026.