diff --git a/Formula/firefox.rb b/Formula/firefox.rb
new file mode 100644
index 0000000..d12c451
--- /dev/null
+++ b/Formula/firefox.rb
@@ -0,0 +1,24 @@
+class Firefox < Formula
+  desc "You know"
+  homepage "https://mozilla.org"
+  url "https://hg.mozilla.org/mozilla-central/raw-file/default/python/mozboot/bin/bootstrap.py"
+  version "1.2"
+  sha256 "348d4dd6222fa5a5a796f4edc51228905a7f0a67f5301eb054e2f24640f76e82"
+  license "MIT"
+
+  depends_on "git" => :build
+  depends_on "git-cinnabar" => :build
+  depends_on "mercurial" => :build
+  depends_on "python@3.11" => :build
+  uses_from_macos "curl" => :build
+
+  def install
+    system "python3", "bootstrap.py", "--no-interactive"
+    system "hg", "up", "-C", "central"
+    system "./mach", "build"
+  end
+
+  test do
+    system "false"
+  end
+end