diff --git a/docs/middleware.md b/docs/middleware.md
index b20adab0..a4a1eb50 100644
--- a/docs/middleware.md
+++ b/docs/middleware.md
@@ -222,3 +222,7 @@ passes through it.  Includes examples for how to emit these timings as statsd me
 This middleware adds authentication to any ASGI application, requiring users to sign in
 using their GitHub account (via [OAuth](https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/)).
 Access can be restricted to specific users or to members of specific GitHub organizations or teams.
+
+#### [PrometheusMiddleware](https://github.com/perdy/starlette-prometheus)
+
+A middleware class for capturing Prometheus metrics related to requests and responses, including in progress requests, timing...
diff --git a/docs/third-party-packages.md b/docs/third-party-packages.md
index 656387ff..74119e51 100644
--- a/docs/third-party-packages.md
+++ b/docs/third-party-packages.md
@@ -50,6 +50,12 @@ Serverless ASGI adapter for AWS Lambda & API Gateway.
 Manage and send messages to groups of channels using websockets.
 Checkout <a href="https://github.com/taoufik07/nejma-chat" target="_blank">nejma-chat</a>, a simple chat application built using `nejma` and `starlette`.
 
+### Starlette Prometheus
+
+<a href="https://github.com/perdy/starlette-prometheus" target="_blank">GitHub</a>
+
+A plugin for providing an endpoint that exposes [Prometheus](https://prometheus.io/) metrics based on its [official python client](https://github.com/prometheus/client_python).
+
 ## Frameworks
 
 ### Responder