diff --git a/Library/Homebrew/cask/lib/hbc/container.rb b/Library/Homebrew/cask/lib/hbc/container.rb
index e42e02f7fc..8c5d2b4018 100644
--- a/Library/Homebrew/cask/lib/hbc/container.rb
+++ b/Library/Homebrew/cask/lib/hbc/container.rb
@@ -8,7 +8,6 @@ require "hbc/container/dmg"
 require "hbc/container/self_extracting_executable"
 require "hbc/container/executable"
 require "hbc/container/generic_unar"
-require "hbc/container/gpg"
 require "hbc/container/gzip"
 require "hbc/container/lzma"
 require "hbc/container/naked"
@@ -45,7 +44,6 @@ module Hbc
         Gzip,  # pure gzip
         Lzma,  # pure lzma
         Xz,    # pure xz
-        Gpg,   # GnuPG signed data
         Executable,
         SvnRepository,
       ]
diff --git a/Library/Homebrew/cask/lib/hbc/container/gpg.rb b/Library/Homebrew/cask/lib/hbc/container/gpg.rb
deleted file mode 100644
index af99d69e63..0000000000
--- a/Library/Homebrew/cask/lib/hbc/container/gpg.rb
+++ /dev/null
@@ -1,43 +0,0 @@
-require "hbc/container/base"
-
-module Hbc
-  class Container
-    class Gpg < Base
-      def self.can_extract?(path:, magic_number:)
-        path.extname == ".gpg"
-      end
-
-      def import_key
-        if @cask.gpg.nil?
-          raise CaskError, "Expected to find gpg public key in formula. Cask '#{@cask}' must add: 'gpg :embedded, key_id: [Public Key ID]' or 'gpg :embedded, key_url: [Public Key URL]'"
-        end
-
-        args = if @cask.gpg.key_id
-          ["--recv-keys", @cask.gpg.key_id]
-        elsif @cask.gpg.key_url
-          ["--fetch-key", @cask.gpg.key_url.to_s]
-        end
-
-        @command.run!("gpg",
-                      args: args,
-                      env: { "PATH" => PATH.new(Formula["gnupg"].opt_bin, ENV["PATH"]) })
-      end
-
-      def extract_to_dir(unpack_dir, basename:, verbose:)
-        import_key
-
-        Dir.mktmpdir do |tmp_unpack_dir|
-          @command.run!("gpg",
-                        args: ["--batch", "--yes", "--output", Pathname(tmp_unpack_dir).join(basename.basename(".gpg")), "--decrypt", path],
-                        env: { "PATH" => PATH.new(Formula["gnupg"].opt_bin, ENV["PATH"]) })
-
-          extract_nested_inside(tmp_unpack_dir, to: unpack_dir)
-        end
-      end
-
-      def dependencies
-        @dependencies ||= [Formula["gnupg"]]
-      end
-    end
-  end
-end