# Tenzir Node v5.20.1

This patch release comes with a few new experimental memory metrics. Furthermore, it resolves an issue where the memory usage would grow without bounds on some systems.

## 🐞 Bug Fixes

### Fixed excessive memory allocation

Nov 12, 2025 · [@IyeOnline](https://github.com/IyeOnline), [@jachris](https://github.com/jachris), [@raxyte](https://github.com/raxyte) · [#5561](https://github.com/tenzir/tenzir/pull/5561)

We have switched the allocator back to the system allocator for now, as the `mimalloc` setup led to significant memory usage issues on some systems.

Furthermore, we added quite a few experimental memory-usage related metrics to `metrics "memory"`, providing additional insight into the memory usage of Tenzir.

[ Download on GitHub ](https://github.com/tenzir/tenzir/releases/tag/v5.20.1)

[Get the release artifacts and source code.](https://github.com/tenzir/tenzir/releases/tag/v5.20.1)