diff --git a/Installomator.sh b/Installomator.sh
index 4e18a69..765e8c7 100755
--- a/Installomator.sh
+++ b/Installomator.sh
@@ -1384,7 +1384,13 @@ snapgeneviewer)
     downloadURL="https://www.snapgene.com/local/targets/download.php?variant=viewer&os=mac&majorRelease=latest&minorRelease=latest"
     expectedTeamID="WVCV9Q8Y78"
     ;;
-    
+mattermost)
+    # credit: Fredrik Larsson (@fredrik_l on MacAdmins Slack)
+    name="Mattermost"
+    type="dmg"
+    downloadURL=$(downloadURLFromGit mattermost desktop)
+    expectedTeamID="UQ8HT4Q2XM"
+    ;;    
 
 # MARK: add new labels above here
 
diff --git a/Labels.txt b/Labels.txt
index deb59a4..1e5cdc3 100644
--- a/Labels.txt
+++ b/Labels.txt
@@ -55,6 +55,7 @@ karabinerelements
 keepassxc
 krisp
 malwarebytes
+mattermost
 microsoftautoupdate
 microsoftcompanyportal
 microsoftdefenderatp
@@ -101,6 +102,7 @@ skitch
 skype
 slack
 snagit2020
+snapgeneviewer
 sonos
 sonoss1
 sonoss2