diff --git a/pkgs/by-name/ma/mattermost-desktop/package.nix b/pkgs/by-name/ma/mattermost-desktop/package.nix
index 7dc24b53521e..14911d6e4cb6 100644
--- a/pkgs/by-name/ma/mattermost-desktop/package.nix
+++ b/pkgs/by-name/ma/mattermost-desktop/package.nix
@@ -37,6 +37,8 @@ buildNpmPackage rec {
       --replace-fail \
         "const VERSION = childProcess.execSync('git rev-parse --short HEAD', {cwd: __dirname}).toString();" \
         "const VERSION = process.env.version;"
+    substituteInPlace src/common/config/buildConfig.ts \
+      --replace-fail 'enableUpdateNotifications: true,' 'enableUpdateNotifications: false,'
   '';
 
   postBuild = ''