diff --git a/README.md b/README.md
index 02306b0f..c52a97ba 100644
--- a/README.md
+++ b/README.md
@@ -1642,6 +1642,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 * [algernon](https://github.com/xyproto/algernon) - HTTP/2 web server with built-in support for Lua, Markdown, GCSS and Amber.
 * [Caddy](https://github.com/caddyserver/caddy) - Caddy is an alternative, HTTP/2 web server that's easy to configure and use.
 * [consul](https://www.consul.io/) - Consul is a tool for service discovery, monitoring and configuration.
+* [cortex-tenant](https://github.com/blind-oracle/cortex-tenant) - Prometheus remote write proxy that adds add Cortex tenant ID header based on metric labels.
 * [devd](https://github.com/cortesi/devd) - Local webserver for developers.
 * [discovery](https://github.com/Bilibili/discovery) - A registry for resilient mid-tier load balancing and failover.
 * [dudeldu](https://github.com/krotik/dudeldu) - A simple SHOUTcast server.