Uptime Kuma 2.5.5 released on 16-09-2026
Uptime Kuma 2.5.5 is out now. It fixes a memory leak in the TCP monitor, so long-running TCP checks should no longer progressively leak RAM — improving stability for anyone running TCP-based monitors.
Check the project’s GitHub release notes or official pages for the full changelog and download instructions.
What’s in this release
- Fixes a memory leak from the TCP monitor (issue #7848). Long-running TCP checks no longer accumulate unreleased memory.
- Recommended upgrade for users running TCP monitors or noticing rising memory usage; no reported breaking changes.
- Improves monitoring stability and reduces the likelihood of crashes or outages caused by the TCP monitor memory leak; report continued issues with diagnostics referencing issue #7848.
Upgrade notes
- No reported breaking changes — perform a normal update and restart of the service, or pull the new Docker image, to apply the fix.
- Monitor memory usage for a few days after upgrading to confirm the leak is resolved; if elevated memory or related issues persist, report findings and diagnostics with reference to issue #7848.
Share your experience with the update or report any regressions so maintainers can follow up.
