Upbit said it will temporarily halt deposits and withdrawals for NEO, GAS, ONT, ONG and MBL at 1:00 p.m. UTC on Aug. 26 as it carries out wallet upgrades on the NEO N3 network and the Ontology network. Trading in the tokens will continue during the maintenance period. The exchange did not give a reopening time, and said services will resume after the network-related upgrades are completed.