diff --git a/ECOSYSTEM.md b/ECOSYSTEM.md
index 6c369755..fcdbd991 100644
--- a/ECOSYSTEM.md
+++ b/ECOSYSTEM.md
@@ -49,6 +49,7 @@ If your project isn't listed here and you would like it to be, please feel free
 - [rgit](https://git.inept.dev/~doyle/rgit.git/about): A blazingly fast Git repository browser, compatible with- and heavily inspired by cgit.
 - [Petclinic](https://github.com/danipardo/petclinic): A port of Spring Framework's Petclinic showcase project to Axum
 - [axum-middleware-example](https://github.com/casbin-rs/axum-middleware-example): A authorization application using Axum-web, Casbin and Diesel, with JWT support.
+- [circleci-hook](https://github.com/DavidS/circleci-hook): Translate CircleCI WebHooks to OpenTelemetry traces to improve your test insights. Add detail with otel-cli to capture individual commands. Use the TRACEPARENT integration to add details from your tests.
 
 [Realworld]: https://github.com/gothinkster/realworld
 [SQLx]: https://github.com/launchbadge/sqlx