diff --git a/channel/zzkt/packages/mattermost.scm b/channel/zzkt/packages/mattermost.scm
index 1f7a9b5..6fd834a 100644
--- a/channel/zzkt/packages/mattermost.scm
+++ b/channel/zzkt/packages/mattermost.scm
@@ -18,6 +18,10 @@
 
 (define-module (zzkt packages mattermost)
   #:use-module (guix)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages glib)
+  #:use-module (gnu packages video)
+  #:use-module (gnu packages xorg)
   #:use-module (guix build-system copy)
   #:use-module (guix build-system node)
   #:use-module (guix git-download)
@@ -81,6 +85,7 @@
            gcc-toolchain ;; libgcc
            alsa-lib      ;; libasound
            glib          ;; libgobject, libglib
+           xorg
            ))
     (arguments
      ;; via readme.md