diff --git a/devops.md b/devops.md
index 487ccb2..0c0a8d4 100644
--- a/devops.md
+++ b/devops.md
@@ -136,6 +136,8 @@ Tools
 -	[Travis](https://travis-ci.org/)
 -	[Gitlab CI](https://about.gitlab.com/)
 
+### Observability
+- [Middleware](https://middleware.io)
 ### Incident Management
 
 - [PagerTree](https://pagertree.com/)