diff --git a/nethserver-mattermost.spec b/nethserver-mattermost.spec
index d35e567..941e730 100644
--- a/nethserver-mattermost.spec
+++ b/nethserver-mattermost.spec
@@ -1,4 +1,4 @@
-%define mattermost_release 6.3.1
+%define mattermost_release 6.3.3
 
 # HACK: avoid "No build ID note found" error
 %undefine _missing_build_ids_terminate_build