diff --git a/README.md b/README.md
index af3d6712..965c289e 100644
--- a/README.md
+++ b/README.md
@@ -138,6 +138,7 @@ The following companies/products use golangci-lint:
 * [The New York Times](https://github.com/NYTimes/encoding-wrapper)
 * [Istio](https://github.com/istio/istio)
 * [SoundCloud](https://github.com/soundcloud/periskop)
+* [Mattermost](https://github.com/mattermost/mattermost-server)
 
 The following great projects use golangci-lint:
 
diff --git a/README.tmpl.md b/README.tmpl.md
index 7d43677e..8fb0096f 100644
--- a/README.tmpl.md
+++ b/README.tmpl.md
@@ -138,6 +138,7 @@ The following companies/products use golangci-lint:
 * [The New York Times](https://github.com/NYTimes/encoding-wrapper)
 * [Istio](https://github.com/istio/istio)
 * [SoundCloud](https://github.com/soundcloud/periskop)
+* [Mattermost](https://github.com/mattermost/mattermost-server)
 
 The following great projects use golangci-lint: