diff --git a/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.installer.yaml b/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.installer.yaml
new file mode 100644
index 000000000..aa1b2f15f
--- /dev/null
+++ b/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.installer.yaml
@@ -0,0 +1,38 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.0.0.schema.json
+PackageIdentifier: Mozilla.Firefox
+PackageVersion: 78.0.2
+FileExtensions:
+- html
+- htm
+- url
+Protocols:
+- http
+- https
+Commands:
+- firefox
+MinimumOSVersion: 10.0.0.0
+Installers:
+- Architecture: x64
+  InstallerType: msi
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/firefox/releases/78.0.2/win64/en-US/Firefox%20Setup%2078.0.2.msi
+  InstallerSha256: EEC10F50E910D7DC21B2EBEC40DB251EC4B5368F174EB8F3777BA24C06AB8671
+  Scope: machine
+  InstallerLocale: en-US
+- Architecture: x86
+  InstallerType: msi
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/firefox/releases/78.0.2/win32/en-US/Firefox%20Setup%2078.0.2.msi
+  InstallerSha256: 5E2299E26BDC2615C8811D796A845FA8BB027020121029F475788CD152024458
+  Scope: machine
+  InstallerLocale: en-US
+- Architecture: arm64
+  InstallerType: exe
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/firefox/releases/78.0.2/win64-aarch64/en-US/Firefox%20Setup%2078.0.2.exe
+  InstallerSha256: 66DE3488F799DC6FB505ED9940726D99B3A87753C60BBC90D92D71277A71385A
+  Scope: machine
+  InstallerLocale: en-US
+  InstallerSwitches:
+    Silent: /S
+    SilentWithProgress: /S
+ManifestType: installer
+ManifestVersion: 1.0.0
+
diff --git a/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.locale.en-US.yaml b/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.locale.en-US.yaml
new file mode 100644
index 000000000..b579871a3
--- /dev/null
+++ b/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.locale.en-US.yaml
@@ -0,0 +1,19 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultlocale.1.0.0.schema.json
+PackageIdentifier: Mozilla.Firefox
+PackageVersion: 78.0.2
+PackageLocale: en-US
+Author: Mozilla
+Moniker: firefox
+Tags:
+- Browser
+- Mozilla
+- Firefox
+PackageUrl: https://www.mozilla.org/en-US/firefox/new/
+LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
+Publisher: Mozilla
+PackageName: Firefox
+License: Mozilla Public License Version 2.0
+ShortDescription: Mozilla Firefox is free and open source software, built by a community of thousands from all over the world.
+ManifestType: defaultLocale
+ManifestVersion: 1.0.0
+
diff --git a/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.yaml b/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.yaml
index fed8b446a..7c515bad1 100644
--- a/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.yaml
+++ b/manifests/m/Mozilla/Firefox/78.0.2/Mozilla.Firefox.yaml
@@ -1,34 +1,7 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.0.0.schema.json
 PackageIdentifier: Mozilla.Firefox
-Publisher: Mozilla
-PackageName: Firefox
-Author: Mozilla
-ShortDescription: Mozilla Firefox is free and open source software, built by a community of thousands from all over the world.
-Moniker: firefox
-Tags:
-- Browser
-- Mozilla
-- Firefox
-FileExtensions:
-- html
-- htm
-- url
-Protocols:
-- http
-- https
-Commands:
-- firefox
-PackageUrl: https://www.mozilla.org/en-US/firefox/new
-License: Mozilla Public License Version 2.0
-LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
-MinimumOSVersion: 10.0.0.0
 PackageVersion: 78.0.2
-InstallerType: msi
-Installers:
-- Architecture: x64
-  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/firefox/releases/78.0.2/win64/en-US/Firefox%20Setup%2078.0.2.msi
-  InstallerSha256: eec10f50e910d7dc21b2ebec40db251ec4b5368f174eb8f3777ba24c06ab8671
-  Scope: machine
-  InstallerLocale: en-US
-PackageLocale: en-US
-ManifestType: singleton
+DefaultLocale: en-US
+ManifestType: version
 ManifestVersion: 1.0.0
+