diff --git a/pkgs/by-name/ma/mattermost/package.nix b/pkgs/by-name/ma/mattermost/package.nix
index 26c8bf135dba..ea2a2db86ae7 100644
--- a/pkgs/by-name/ma/mattermost/package.nix
+++ b/pkgs/by-name/ma/mattermost/package.nix
@@ -19,8 +19,8 @@
     #
     # Ensure you also check ../mattermostLatest/package.nix.
     regex = "^v(10\\.11\\.[0-9]+)$";
-    version = "10.11.8";
-    srcHash = "sha256-OlP5fO85YXP09H9jClSHNGC0/Gvq4h0+VgHTBKsbUWA=";
+    version = "10.11.9";
+    srcHash = "sha256-e7itz3VcjSwXGTA+Dn0g5CmQzpnquQ6GmWNdvwrhaQo=";
     vendorHash = "sha256-Lsw/cvl98JdVmzWr85lAv/JMcTmZZZ4ALLunFLNcrro=";
     npmDepsHash = "sha256-p9dq31qw0EZDQIl2ysKE38JgDyLA6XvSv+VtHuRh+8A=";
     lockfileOverlay = ''