`README.md`: Document MSRV
@@ -20,6 +20,10 @@ To include `defmt` in your existing project, follow our [Application Setup guide
[Application Setup guide]: https://defmt.ferrous-systems.com/setup-app.html
+## MSRV
+`defmt` always compiles on the [latest `stable` rust release](https://github.com/rust-lang/rust/releases/latest). This is enforced by our CI building and testing against this version. <br>
+It still might work on older rust versions, but this isn't ensured.
+
## Support
`defmt` is part of the [Knurling] project, [Ferrous Systems]' effort at
