diff --git a/.github/workflows/updater.sh b/.github/workflows/updater.sh
index 400abfe..506276a 100644
--- a/.github/workflows/updater.sh
+++ b/.github/workflows/updater.sh
@@ -105,6 +105,7 @@ SOURCE_SUM=$checksum
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=$extension
 SOURCE_IN_SUBDIR=true
+SOURCE_FILENAME=mattermost.tar.gz
 EOT
 echo "... conf/$src.src updated"