diff --git a/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.installer.yaml b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.installer.yaml
new file mode 100644
index 00000000000000..7f9233133d50ea
--- /dev/null
+++ b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.installer.yaml
@@ -0,0 +1,42 @@
+# Created with YamlCreate.ps1 Dumplings Mod
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.installer.1.6.0.schema.json
+
+PackageIdentifier: Mozilla.Firefox.DeveloperEdition.sq
+PackageVersion: "134.0"
+InstallerType: nullsoft
+Scope: machine
+InstallerSwitches:
+  Silent: /S /PreventRebootRequired=true
+  SilentWithProgress: /S /PreventRebootRequired=true
+  InstallLocation: /InstallDirectoryPath="<INSTALLPATH>"
+UpgradeBehavior: install
+Protocols:
+- http
+- https
+- mailto
+FileExtensions:
+- avif
+- htm
+- html
+- pdf
+- shtml
+- svg
+- webp
+- xht
+- xhtml
+ReleaseDate: 2024-11-26
+Installers:
+- Architecture: x86
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/devedition/releases/134.0b1/win32/sq/Firefox%20Setup%20134.0b1.exe
+  InstallerSha256: CCE0BA2F87A035AA43CAAB6BACB6AEC70F54B16B4918CEE23E924816287C1AE4
+  ProductCode: Firefox Developer Edition 134.0 (x86 sq)
+- Architecture: x64
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/devedition/releases/134.0b1/win64/sq/Firefox%20Setup%20134.0b1.exe
+  InstallerSha256: 44F81D0CA1F02D072FCED016584CED85FA2B5B6B8A96C0BD51201445E95D00EA
+  ProductCode: Firefox Developer Edition 134.0 (x64 sq)
+- Architecture: arm64
+  InstallerUrl: https://download-installer.cdn.mozilla.net/pub/devedition/releases/134.0b1/win64-aarch64/sq/Firefox%20Setup%20134.0b1.exe
+  InstallerSha256: 5E1582C34836E62495EDDEF9155C85B339936F030705DC2040707E2882DBDAB1
+  ProductCode: Firefox Developer Edition 134.0 (arm64 sq)
+ManifestType: installer
+ManifestVersion: 1.6.0
diff --git a/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.locale.en-US.yaml b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.locale.en-US.yaml
new file mode 100644
index 00000000000000..2ea8a4051ae5be
--- /dev/null
+++ b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.locale.en-US.yaml
@@ -0,0 +1,38 @@
+# Created with YamlCreate.ps1 Dumplings Mod
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.defaultLocale.1.6.0.schema.json
+
+PackageIdentifier: Mozilla.Firefox.DeveloperEdition.sq
+PackageVersion: "134.0"
+PackageLocale: en-US
+Publisher: Mozilla
+PublisherUrl: https://www.mozilla.org/
+PublisherSupportUrl: https://support.mozilla.org/
+PrivacyUrl: https://www.mozilla.org/privacy/firefox/
+Author: Mozilla Foundation
+PackageName: Firefox Developer Edition (sq)
+PackageUrl: https://www.mozilla.org/firefox/developer/
+License: MPL-2.0
+LicenseUrl: https://www.mozilla.org/MPL/2.0
+CopyrightUrl: https://www.mozilla.org/foundation/trademarks/policy
+ShortDescription: Firefox Browser Developer Edition
+Description: Get the latest features, fast performance, and the development tools you need to build for the open web using Firefox Browser Developer Edition.
+Moniker: firefox-dev
+Tags:
+- browser
+- cross-platform
+- foss
+- gecko
+- quantum
+- spidermonkey
+- web
+- web-browser
+ReleaseNotes: |-
+  New
+  - Firefox now supports touchpad hold gestures on Linux. This means that kinetic (momentum) scrolling can now be interrupted by placing two fingers on the touchpad.
+  - HEVC hardware support is implemented for Windows users.
+  Changed
+  - Firefox follows now the model HTML specification for transient user activation more closely. This change makes popup blocking less strict in cases where previous versions of Firefox were overly aggressive, reducing erroneous blocking prompts.
+  Developer
+ReleaseNotesUrl: https://www.mozilla.org/firefox/134.0beta/releasenotes/
+ManifestType: defaultLocale
+ManifestVersion: 1.6.0
diff --git a/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.locale.zh-CN.yaml b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.locale.zh-CN.yaml
new file mode 100644
index 00000000000000..6f82efb3559729
--- /dev/null
+++ b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.locale.zh-CN.yaml
@@ -0,0 +1,27 @@
+# Created with YamlCreate.ps1 Dumplings Mod
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.locale.1.6.0.schema.json
+
+PackageIdentifier: Mozilla.Firefox.DeveloperEdition.sq
+PackageVersion: "134.0"
+PackageLocale: zh-CN
+Publisher: Mozilla
+PublisherUrl: https://www.mozilla.org/zh-CN/
+PublisherSupportUrl: https://support.mozilla.org/zh-CN/
+PrivacyUrl: https://www.mozilla.org/zh-CN/privacy/firefox/
+Author: Mozilla 基金会
+PackageName: Firefox Developer Edition (sq)
+PackageUrl: https://www.mozilla.org/zh-CN/firefox/developer/
+License: MPL-2.0
+LicenseUrl: https://www.mozilla.org/MPL/2.0
+CopyrightUrl: https://www.mozilla.org/foundation/trademarks/policy
+ShortDescription: Firefox 浏览器 开发者版
+Description: Firefox 开发者版本，可获得最新功能、高速性能，以及您打造开放 Web 所需的开发工具。
+Tags:
+- mozilla
+- 浏览器
+- 火狐
+- 火狐浏览器
+- 网页浏览器
+ReleaseNotesUrl: https://www.mozilla.org/firefox/134.0beta/releasenotes/
+ManifestType: locale
+ManifestVersion: 1.6.0
diff --git a/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.yaml b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.yaml
new file mode 100644
index 00000000000000..1f7a239c049411
--- /dev/null
+++ b/manifests/m/Mozilla/Firefox/DeveloperEdition/sq/134.0/Mozilla.Firefox.DeveloperEdition.sq.yaml
@@ -0,0 +1,8 @@
+# Created with YamlCreate.ps1 Dumplings Mod
+# yaml-language-server: $schema=https://aka.ms/winget-manifest.version.1.6.0.schema.json
+
+PackageIdentifier: Mozilla.Firefox.DeveloperEdition.sq
+PackageVersion: "134.0"
+DefaultLocale: en-US
+ManifestType: version
+ManifestVersion: 1.6.0