diff --git a/conf/app.src b/conf/app.src
index 17a898d..5ac7636 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,6 +1,6 @@
-SOURCE_URL=https://releases.mattermost.com/4.7.3/mattermost-4.7.3-linux-amd64.tar.gz
-SOURCE_SUM=09a728ad189d2cf315d664fed7caf68fbf9af60f85e2619d308b5345e576293c
+SOURCE_URL=https://releases.mattermost.com/4.8.0/mattermost-4.8.0-linux-amd64.tar.gz
+SOURCE_SUM=1d6dda36592544b92905989a922ff4698d0a824c30483e0ecdf7233443001c25
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=mattermost-4.7.3-linux-amd64.tar.gz
+SOURCE_FILENAME=mattermost-4.8.0-linux-amd64.tar.gz