diff --git a/manifests/Mattermost/MattermostDesktop/4.5.4.yaml b/manifests/Mattermost/MattermostDesktop/4.5.4.yaml
new file mode 100644
index 000000000..c560ad320
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+++ b/manifests/Mattermost/MattermostDesktop/4.5.4.yaml
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+Id: Mattermost.MattermostDesktop
+Version: 4.5.4
+Name: Mattermost Desktop
+AppMoniker: mattermost
+Publisher: Mattermost
+License: Copyright (c) 2016-present Mattermost, Inc.
+LicenseUrl: https://github.com/mattermost/desktop/blob/master/LICENSE.txt
+Tags: chat, collaboration, irc, work, teams
+Description: Mattermost Desktop application for Windows
+Homepage: https://mattermost.com/
+Installers:
+  - Arch: x64
+    Url: https://releases.mattermost.com/desktop/4.5.4/mattermost-desktop-4.5.4-x64.msi
+    Sha256: dc75003bff8bae77bd6b408c06391f8041bdfa440c717c1d77aeed86a865bbdf
+    InstallerType: msi