diff --git a/Third-Party-Packages.md b/Third-Party-Packages.md
index 8dc90bc..4e1079f 100644
--- a/Third-Party-Packages.md
+++ b/Third-Party-Packages.md
@@ -22,6 +22,7 @@ This page lists third party packages implementing useful Monolog handlers, forma
 - [**kozlice/monolog-kafka**](https://github.com/kozlice/monolog-kafka) sends log records to Apache Kafka
 - [**vbelozyorov/monolog-gearman-handler**](https://github.com/VBelozyorov/monolog-gearman-handler) sends log records to Gearman for asynchronous recording
 - [**nvanheuverzwijn/monolog-logdna**](https://github.com/nvanheuverzwijn/monolog-logdna) sends log records to LogDNA
+- [**viniciuswebdev/monolog-mattermost**](https://github.com/viniciuswebdev/monolog-mattermost) sends log records to Mattermost
 
 # Formatters