# Our release cycle
Optimism releases new software every Tuesday and Thursday at 7PM UTC. For now software is released on Kovan first, followed by mainnet a week later. Once the Kovan testnet is decommissioned, software will be released on Goerli first, followed by mainnet a week later.
# Up to date information
- Changelog (opens new window)
- Release announcement mailing list (opens new window)
- RSS feed (opens new window)
If you run your own replica, it is important that you subscribe either to the release announcement mailing list or the RSS feed to know when you need to upgrade.