On November 21st, Starknet tweeted that its mainnet will be upgraded to version v0.13.3 on November 27th. At that time, the price of Blob Gas on Starknet will be 5 times cheaper. Some node operators running Juno instances (instances) need to upgrade to version v0.12.4 to synchronize with v0.13.3 blocks. If using Pathfinder > v0.14.2, no action is required.