diff --git a/conf/app.src b/conf/app.src
index 5954f32..2918cac 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,6 +1,6 @@
-SOURCE_URL=https://releases.mattermost.com/5.1.0/mattermost-5.1.0-linux-amd64.tar.gz
-SOURCE_SUM=7f14412231a852fb307ff0bea9f67dcbc862da9901d55d91d7838b092db6a5ae
+SOURCE_URL=https://releases.mattermost.com/5.1.1/mattermost-5.1.1-linux-amd64.tar.gz
+SOURCE_SUM=18ab8f43ebd2652cba946e0430399ed15e10ef44a3aca88e4467ea55da265ef4
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=mattermost-5.1.0-linux-amd64.tar.gz
+SOURCE_FILENAME=mattermost-5.1.1-linux-amd64.tar.gz