diff --git a/manifests/Mozilla/FirefoxDeveloperEdition/85.0b9.yaml b/manifests/Mozilla/FirefoxDeveloperEdition/85.0b9.yaml
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+Id: Mozilla.FirefoxDeveloperEdition
+Version: 85.0b9
+Name: Firefox Developer Edition
+Publisher: Mozilla
+License: Mozilla Public License V2.0
+LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
+AppMoniker: firefoxdev
+Tags: browser, mozilla, firefox, dev
+Description: Firefox Developer Edition is the blazing fast browser that offers cutting edge developer tools and latest features like CSS Grid support and framework debugging.
+Homepage: https://www.mozilla.org/en-US/firefox/developer/
+Installers:
+  - Arch: x64
+    Url: https://download-installer.cdn.mozilla.net/pub/devedition/releases/85.0b9/win64/en-US/Firefox%20Setup%2085.0b9.msi
+    Sha256: D4B49AE596A5196DB874D47CCEBCD3C9575A8FF31C6E4A8762C97D975938D6BC
+    InstallerType: msi
+