diff --git a/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.installer.yaml b/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.installer.yaml
new file mode 100644
index 000000000..57d6a720f
--- /dev/null
+++ b/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.installer.yaml
@@ -0,0 +1,22 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.0.0.schema.json
+PackageIdentifier: Mozilla.FirefoxDeveloperEdition
+PackageVersion: 89.0b13
+Installers:
+- Architecture: x64
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/devedition/releases/89.0b13/win64/en-US/Firefox%20Setup%2089.0b13.msi
+  InstallerSha256: 0073936F2C22CABF6857D3797F150CDBE3A0C26B0E7B7B4A0C1AFF0818AF2362
+  InstallerType: msi
+- Architecture: x86
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/devedition/releases/89.0b13/win32/en-US/Firefox%20Setup%2089.0b13.msi
+  InstallerSha256: D711C73AFD0FF64E68A62D2F82D2D7C012290357FFBDEDF3DE44CFD2FBDF5C75
+  InstallerType: msi
+- Architecture: arm64
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/devedition/releases/89.0b13/win64-aarch64/en-US/Firefox%20Setup%2089.0b13.exe
+  InstallerSha256: C951D90D666ED8E06BB1F942F8D00C8AD86C90592F0DB6701C51A28B0E24D5AF
+  InstallerType: exe
+  InstallerSwitches:
+    Silent: /S
+    SilentWithProgress: /S
+ManifestType: installer
+ManifestVersion: 1.0.0
+
diff --git a/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.locale.en-US.yaml b/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.locale.en-US.yaml
new file mode 100644
index 000000000..56e0d1386
--- /dev/null
+++ b/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.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.FirefoxDeveloperEdition
+PackageVersion: 89.0b13
+PackageLocale: en-US
+LicenseUrl: https://www.mozilla.org/en-US/MPL/2.0/
+Moniker: firefoxdev
+Tags:
+- browser
+- mozilla
+- firefox
+- dev
+PackageUrl: https://www.mozilla.org/en-US/firefox/developer/
+Publisher: Mozilla
+PackageName: Firefox Developer Edition
+License: Mozilla Public License V2.0
+ShortDescription: Firefox Developer Edition is the blazing fast browser that offers cutting edge developer tools and latest features like CSS Grid support and framework debugging.
+ManifestType: defaultLocale
+ManifestVersion: 1.0.0
+
diff --git a/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.yaml b/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.yaml
new file mode 100644
index 000000000..26b5ded47
--- /dev/null
+++ b/manifests/m/Mozilla/FirefoxDeveloperEdition/89.0b13/Mozilla.FirefoxDeveloperEdition.yaml
@@ -0,0 +1,7 @@
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.0.0.schema.json
+PackageIdentifier: Mozilla.FirefoxDeveloperEdition
+PackageVersion: 89.0b13
+DefaultLocale: en-US
+ManifestType: version
+ManifestVersion: 1.0.0
+