diff --git a/conf/app.src b/conf/app.src
index 88903ea..7302683 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,6 +1,6 @@
-SOURCE_URL=https://releases.mattermost.com/5.18.0/mattermost-5.18.0-linux-amd64.tar.gz
-SOURCE_SUM=a90fdccd929cb1ce52c5f1666b01381d4659ece5069bd8d856107bdfcc930570
+SOURCE_URL=https://releases.mattermost.com/5.18.1/mattermost-5.18.1-linux-amd64.tar.gz
+SOURCE_SUM=0946cb3230f04637596feb2e6a94cf3955940b41cb724e50797449857c66e3c1
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=mattermost-5.18.0-linux-amd64.tar.gz
+SOURCE_FILENAME=mattermost-5.18.1-linux-amd64.tar.gz