diff --git a/Library/Homebrew/cask/audit.rb b/Library/Homebrew/cask/audit.rb
index 62e067a3ae..8b65aca250 100644
--- a/Library/Homebrew/cask/audit.rb
+++ b/Library/Homebrew/cask/audit.rb
@@ -20,11 +20,11 @@ module Cask
 
     attr_reader :cask, :download
 
-    attr_predicate :appcast?, :new_cask?, :strict?, :signing?, :online?, :token_conflicts?
+    attr_predicate :new_cask?, :strict?, :signing?, :online?, :token_conflicts?
 
     def initialize(
       cask,
-      appcast: nil, download: nil, quarantine: nil,
+      download: nil, quarantine: nil,
       token_conflicts: nil, online: nil, strict: nil, signing: nil,
       new_cask: nil, only: [], except: []
     )
@@ -34,15 +34,10 @@ module Cask
       signing = new_cask if signing.nil?
       token_conflicts = new_cask if token_conflicts.nil?
 
-      # `online` implies `appcast` and `download`
-      appcast = online if appcast.nil?
-      download = online if download.nil?
-
-      # `signing` implies `download`
-      download = signing if download.nil?
+      # `online` and `signing` imply `download`
+      download = online || signing if download.nil?
 
       @cask = cask
-      @appcast = appcast
       @download = Download.new(cask, quarantine: quarantine) if download
       @online = online
       @strict = strict
@@ -292,22 +287,15 @@ module Cask
     end
 
     sig { void }
-    def audit_appcast_and_livecheck
+    def audit_appcast
       return unless cask.appcast
 
-      if cask.livecheckable?
-        add_error "Cask has a `livecheck`, the `appcast` should be removed."
-      elsif new_cask?
-        add_error "New casks should use a `livecheck` instead of an `appcast`."
-      end
+      add_error "`appcast` should be replaced with a `livecheck`."
     end
 
     sig { void }
-    def audit_latest_with_appcast_or_livecheck
+    def audit_latest_with_livecheck
       return unless cask.version.latest?
-
-      add_error "Casks with an `appcast` should not use `version :latest`." if cask.appcast
-
       return unless cask.livecheckable?
       return if cask.livecheck.skip?
 
@@ -326,8 +314,10 @@ module Cask
 
     sig { params(livecheck_result: T.any(NilClass, T::Boolean, Symbol)).void }
     def audit_hosting_with_livecheck(livecheck_result: audit_livecheck_version)
-      return if cask.discontinued? || cask.version.latest?
-      return if block_url_offline? || cask.appcast || cask.livecheckable?
+      return if cask.discontinued?
+      return if cask.version.latest?
+      return if block_url_offline?
+      return if cask.livecheckable?
       return if livecheck_result == :auto_detected
 
       add_livecheck = "please add a livecheck. See #{Formatter.url(LIVECHECK_REFERENCE_URL)}"
@@ -478,7 +468,7 @@ module Cask
     end
 
     sig { void }
-    def audit_appcast_unneeded_long_version
+    def audit_livecheck_unneeded_long_version
       return unless cask.livecheck.strategy == :sparkle
       return unless cask.version.csv.second
       return if cask.url.to_s.include? cask.version.csv.second
@@ -561,7 +551,7 @@ module Cask
 
     sig { returns(T.any(NilClass, T::Boolean, Symbol)) }
     def audit_livecheck_version
-      return unless appcast?
+      return unless online?
 
       referenced_cask, = Homebrew::Livecheck.resolve_livecheck_reference(cask)
 
@@ -581,16 +571,8 @@ module Cask
         cask,
         referenced_formula_or_cask: referenced_cask,
       )&.fetch(:latest)
-      if cask.version.to_s == latest_version.to_s
-        if cask.appcast
-          add_error "Version '#{latest_version}' was automatically detected by livecheck; " \
-                    "the appcast should be removed."
-        end
 
-        return :auto_detected
-      end
-
-      return :appcast if cask.appcast && !cask.livecheckable?
+      return :auto_detected if cask.version.to_s == latest_version.to_s
 
       add_error "Version '#{cask.version}' differs from '#{latest_version}' retrieved by livecheck."
 
@@ -643,33 +625,6 @@ module Cask
                 "and the cask defined #{min_os_symbol}"
     end
 
-    sig { void }
-    def audit_appcast_contains_version
-      return unless appcast?
-      return if cask.appcast.to_s.empty?
-      return if cask.appcast.must_contain == :no_check
-
-      appcast_url = cask.appcast.to_s
-      begin
-        details = curl_http_content_headers_and_checksum(appcast_url, user_agent: HOMEBREW_USER_AGENT_FAKE_SAFARI)
-        appcast_contents = details[:file]
-      rescue
-        add_error "appcast at URL '#{Formatter.url(appcast_url)}' offline or looping"
-        return
-      end
-
-      version_stanza = cask.version.to_s
-      adjusted_version_stanza = cask.appcast.must_contain.presence || version_stanza.match(/^[[:alnum:].]+/)[0]
-      return if appcast_contents.blank?
-      return if appcast_contents.include?(adjusted_version_stanza)
-
-      add_error <<~EOS.chomp
-        appcast at URL '#{Formatter.url(appcast_url)}' does not contain \
-        the version number '#{adjusted_version_stanza}':
-        #{appcast_contents}
-      EOS
-    end
-
     sig { void }
     def audit_github_prerelease_version
       return if cask.tap == "homebrew/cask-versions"
@@ -808,8 +763,9 @@ module Cask
                                             user_agents: [cask.url.user_agent], referer: cask.url&.referer)
       end
 
-      if cask.appcast && appcast?
-        validate_url_for_https_availability(cask.appcast, "appcast URL", cask.token, cask.tap, check_content: true)
+      if cask.livecheckable? && !cask.livecheck.url.is_a?(Symbol)
+        validate_url_for_https_availability(cask.livecheck.url, "livecheck URL", cask.token, cask.tap,
+                                            check_content: true)
       end
 
       return unless cask.homepage
@@ -841,7 +797,6 @@ module Cask
 
       _, user, repo = *regex.match(cask.url.to_s)
       _, user, repo = *regex.match(cask.homepage) unless user
-      _, user, repo = *regex.match(cask.appcast.to_s) unless user
       return if !user || !repo
 
       repo.gsub!(/.git$/, "")
diff --git a/Library/Homebrew/cask/auditor.rb b/Library/Homebrew/cask/auditor.rb
index 0969a7dc30..c4f93896dc 100644
--- a/Library/Homebrew/cask/auditor.rb
+++ b/Library/Homebrew/cask/auditor.rb
@@ -17,7 +17,6 @@ module Cask
     def initialize(
       cask,
       audit_download: nil,
-      audit_appcast: nil,
       audit_online: nil,
       audit_strict: nil,
       audit_signing: nil,
@@ -33,7 +32,6 @@ module Cask
     )
       @cask = cask
       @audit_download = audit_download
-      @audit_appcast = audit_appcast
       @audit_online = audit_online
       @audit_new_cask = audit_new_cask
       @audit_strict = audit_strict
@@ -120,7 +118,6 @@ module Cask
     def audit_cask_instance(cask)
       audit = Audit.new(
         cask,
-        appcast:         @audit_appcast,
         online:          @audit_online,
         strict:          @audit_strict,
         signing:         @audit_signing,
diff --git a/Library/Homebrew/cask/cmd/audit.rb b/Library/Homebrew/cask/cmd/audit.rb
index 6326446fcf..35179c3455 100644
--- a/Library/Homebrew/cask/cmd/audit.rb
+++ b/Library/Homebrew/cask/cmd/audit.rb
@@ -16,7 +16,8 @@ module Cask
           switch "--[no-]download",
                  description: "Audit the downloaded file"
           switch "--[no-]appcast",
-                 description: "Audit the appcast"
+                 description: "Audit the appcast",
+                 replacement: false
           switch "--[no-]token-conflicts",
                  description: "Audit for token conflicts"
           switch "--[no-]signing",
@@ -49,7 +50,6 @@ module Cask
         results = self.class.audit_casks(
           *casks,
           download:              args.download?,
-          appcast:               args.appcast?,
           online:                args.online?,
           strict:                args.strict?,
           signing:               args.signing?,
@@ -73,7 +73,6 @@ module Cask
       def self.audit_casks(
         *casks,
         download:,
-        appcast:,
         online:,
         strict:,
         signing:,
@@ -89,7 +88,6 @@ module Cask
       )
         options = {
           audit_download:        download,
-          audit_appcast:         appcast,
           audit_online:          online,
           audit_strict:          strict,
           audit_signing:         signing,
diff --git a/Library/Homebrew/cask/dsl.rb b/Library/Homebrew/cask/dsl.rb
index e873d0a347..3f14b5cccd 100644
--- a/Library/Homebrew/cask/dsl.rb
+++ b/Library/Homebrew/cask/dsl.rb
@@ -11,7 +11,6 @@ require "cask/artifact_set"
 require "cask/caskroom"
 require "cask/exceptions"
 
-require "cask/dsl/appcast"
 require "cask/dsl/base"
 require "cask/dsl/caveats"
 require "cask/dsl/conflicts_with"
@@ -211,7 +210,11 @@ module Cask
 
     # @api public
     def appcast(*args, **kwargs)
-      set_unique_stanza(:appcast, args.empty? && kwargs.empty?) { DSL::Appcast.new(*args, **kwargs) }
+      set_unique_stanza(:appcast, args.empty? && kwargs.empty?) do
+        # TODO: Remove the remaining audit for `appcast` usage when enabling this deprecation.
+        # odeprecated "the `appcast` stanza", "the `livecheck` stanza"
+        true
+      end
     end
 
     # @api public
diff --git a/Library/Homebrew/cask/dsl/appcast.rb b/Library/Homebrew/cask/dsl/appcast.rb
deleted file mode 100644
index c29a798192..0000000000
--- a/Library/Homebrew/cask/dsl/appcast.rb
+++ /dev/null
@@ -1,27 +0,0 @@
-# typed: true
-# frozen_string_literal: true
-
-module Cask
-  class DSL
-    # Class corresponding to the `appcast` stanza.
-    #
-    # @api private
-    class Appcast
-      attr_reader :uri, :parameters, :must_contain
-
-      def initialize(uri, **parameters)
-        @uri        = URI(uri)
-        @parameters = parameters
-        @must_contain = parameters[:must_contain] if parameters.key?(:must_contain)
-      end
-
-      def to_yaml
-        [uri, parameters].to_yaml
-      end
-
-      def to_s
-        uri.to_s
-      end
-    end
-  end
-end
diff --git a/Library/Homebrew/cli/parser.rb b/Library/Homebrew/cli/parser.rb
index 39cf3604a8..0fc1cf2f09 100644
--- a/Library/Homebrew/cli/parser.rb
+++ b/Library/Homebrew/cli/parser.rb
@@ -156,7 +156,7 @@ module Homebrew
       end
 
       def switch(*names, description: nil, replacement: nil, env: nil, depends_on: nil,
-                 method: :on, hidden: false)
+                 method: :on, hidden: false, disable: false)
         global_switch = names.first.is_a?(Symbol)
         return if global_switch
 
@@ -167,7 +167,7 @@ module Homebrew
           description += " (disabled#{"; replaced by #{replacement}" if replacement.present?})"
         end
         @parser.public_send(method, *names, *wrap_option_desc(description)) do |value|
-          odisabled "the `#{names.first}` switch", replacement unless replacement.nil?
+          odeprecated "the `#{names.first}` switch", replacement, disable: disable if !replacement.nil? || disable
           value = true if names.none? { |name| name.start_with?("--[no-]") }
 
           set_switch(*names, value: value, from: :args)
diff --git a/Library/Homebrew/cmd/tap.rb b/Library/Homebrew/cmd/tap.rb
index a68cc58a5b..2361e6b0e9 100644
--- a/Library/Homebrew/cmd/tap.rb
+++ b/Library/Homebrew/cmd/tap.rb
@@ -30,10 +30,12 @@ module Homebrew
       switch "--full",
              description: "Convert a shallow clone to a full clone without untapping. Taps are only cloned as " \
                           "shallow clones if `--shallow` was originally passed.",
-             replacement: false
+             replacement: false,
+             disable:     true
       switch "--shallow",
              description: "Fetch tap as a shallow clone rather than a full clone. Useful for continuous integration.",
-             replacement: false
+             replacement: false,
+             disable:     true
       switch "--[no-]force-auto-update",
              description: "Auto-update tap even if it is not hosted on GitHub. By default, only taps " \
                           "hosted on GitHub are auto-updated (for performance reasons)."
diff --git a/Library/Homebrew/dev-cmd/audit.rb b/Library/Homebrew/dev-cmd/audit.rb
index 407f7ba295..a481432293 100644
--- a/Library/Homebrew/dev-cmd/audit.rb
+++ b/Library/Homebrew/dev-cmd/audit.rb
@@ -49,7 +49,8 @@ module Homebrew
                           "for Homebrew. This should be used when creating new formula and implies " \
                           "`--strict` and `--online`."
       switch "--[no-]appcast",
-             description: "Audit the appcast."
+             description: "Audit the appcast.",
+             replacement: false
       switch "--[no-]signing",
              description: "Audit for signed apps, which are required on ARM"
       switch "--token-conflicts",
@@ -246,8 +247,6 @@ module Homebrew
       Cask::Cmd::Audit.audit_casks(
         *audit_casks,
         download:              nil,
-        # No need for `|| nil` for `--[no-]appcast` because boolean switches are already `nil` if not passed
-        appcast:               args.appcast?,
         # No need for `|| nil` for `--[no-]signing` because boolean switches are already `nil` if not passed
         signing:               args.signing?,
         online:                args.online? || nil,
diff --git a/Library/Homebrew/livecheck/livecheck.rb b/Library/Homebrew/livecheck/livecheck.rb
index 8c52631b10..a2a015c8aa 100644
--- a/Library/Homebrew/livecheck/livecheck.rb
+++ b/Library/Homebrew/livecheck/livecheck.rb
@@ -540,7 +540,6 @@ module Homebrew
         urls << package_or_resource.head.url if package_or_resource.head
         urls << package_or_resource.homepage if package_or_resource.homepage
       when Cask::Cask
-        urls << package_or_resource.appcast.to_s if package_or_resource.appcast
         urls << package_or_resource.url.to_s if package_or_resource.url
         urls << package_or_resource.homepage if package_or_resource.homepage
       when Resource
diff --git a/Library/Homebrew/sorbet/rbi/parlour.rbi b/Library/Homebrew/sorbet/rbi/parlour.rbi
index 0f043573bc..803e17a5cb 100644
--- a/Library/Homebrew/sorbet/rbi/parlour.rbi
+++ b/Library/Homebrew/sorbet/rbi/parlour.rbi
@@ -119,9 +119,6 @@ end
 
 module Cask
   class Audit
-    sig { returns(T::Boolean) }
-    def appcast?; end
-
     sig { returns(T::Boolean) }
     def new_cask?; end
 
diff --git a/Library/Homebrew/test/cask/audit_spec.rb b/Library/Homebrew/test/cask/audit_spec.rb
index 7c48c9cee5..251aa00217 100644
--- a/Library/Homebrew/test/cask/audit_spec.rb
+++ b/Library/Homebrew/test/cask/audit_spec.rb
@@ -70,11 +70,13 @@ describe Cask::Audit, :cask do
   let(:except) { [] }
   let(:strict) { nil }
   let(:token_conflicts) { nil }
+  let(:signing) { nil }
   let(:audit) do
     described_class.new(cask, online:          online,
                               strict:          strict,
                               new_cask:        new_cask,
                               token_conflicts: token_conflicts,
+                              signing:         signing,
                               only:            only,
                               except:          except)
   end
@@ -99,9 +101,13 @@ describe Cask::Audit, :cask do
     context "when `online` is specified" do
       let(:online) { true }
 
-      it "implies `appcast`" do
-        expect(audit.appcast?).to be true
+      it "implies `download`" do
+        expect(audit.download).to be_truthy
       end
+    end
+
+    context "when `signing` is specified" do
+      let(:signing) { true }
 
       it "implies `download`" do
         expect(audit.download).to be_truthy
@@ -761,7 +767,7 @@ describe Cask::Audit, :cask do
       end
 
       context "when the download is hosted on SourceForge and has a livecheck" do
-        let(:cask_token) { "sourceforge-with-appcast" }
+        let(:cask_token) { "sourceforge-with-livecheck" }
 
         it { is_expected.not_to error_with(message) }
       end
@@ -774,48 +780,57 @@ describe Cask::Audit, :cask do
       end
 
       context "when the download is hosted on DevMate and has a livecheck" do
-        let(:cask_token) { "devmate-with-appcast" }
+        let(:cask_token) { "devmate-with-livecheck" }
 
         it { is_expected.not_to error_with(message) }
       end
 
       context "when the download is hosted on DevMate and does not have a livecheck" do
-        let(:cask_token) { "devmate-without-appcast" }
+        let(:cask_token) { "devmate-without-livecheck" }
 
         it { is_expected.to error_with(message) }
       end
 
       context "when the download is hosted on HockeyApp and has a livecheck" do
-        let(:cask_token) { "hockeyapp-with-appcast" }
+        let(:cask_token) { "hockeyapp-with-livecheck" }
 
         it { is_expected.not_to error_with(message) }
       end
 
       context "when the download is hosted on HockeyApp and does not have a livecheck" do
-        let(:cask_token) { "hockeyapp-without-appcast" }
+        let(:cask_token) { "hockeyapp-without-livecheck" }
 
         it { is_expected.to error_with(message) }
       end
     end
 
-    describe "latest with appcast checks" do
-      let(:only) { ["latest_with_appcast_or_livecheck"] }
-      let(:message) { "Casks with an `appcast` should not use `version :latest`." }
+    describe "latest with livecheck checks" do
+      let(:only) { ["latest_with_livecheck"] }
+      let(:message) { "Casks with a `livecheck` should not use `version :latest`." }
 
-      context "when the Cask is :latest and does not have an appcast" do
+      context "when the Cask is :latest and does not have a livecheck" do
         let(:cask_token) { "version-latest" }
 
         it { is_expected.not_to error_with(message) }
       end
 
-      context "when the Cask is versioned and has an appcast" do
-        let(:cask_token) { "with-appcast" }
+      context "when the Cask is versioned and has a livecheck with skip information" do
+        let(:cask_token) { "latest-with-livecheck-skip" }
 
-        it { is_expected.not_to error_with(message) }
+        it { is_expected.to pass }
       end
 
-      context "when the Cask is :latest and has an appcast" do
-        let(:cask_token) { "latest-with-appcast" }
+      context "when the Cask is versioned and has a livecheck" do
+        let(:cask_token) { "latest-with-livecheck" }
+
+        it { is_expected.to error_with(message) }
+      end
+    end
+
+    describe "appcast" do
+      context "when the Cask has an appcast" do
+        let(:cask_token) { "with-appcast" }
+        let(:message) { "`appcast` should be replaced with a `livecheck`." }
 
         it { is_expected.to error_with(message) }
       end
diff --git a/Library/Homebrew/test/cask/dsl/appcast_spec.rb b/Library/Homebrew/test/cask/dsl/appcast_spec.rb
deleted file mode 100644
index 3d4edef3cf..0000000000
--- a/Library/Homebrew/test/cask/dsl/appcast_spec.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-# typed: false
-# frozen_string_literal: true
-
-describe Cask::DSL::Appcast do
-  subject(:appcast) { described_class.new(url, **params) }
-
-  let(:url) { "https://brew.sh" }
-  let(:uri) { URI(url) }
-  let(:params) { {} }
-
-  describe "#to_s" do
-    it "returns the parsed URI string" do
-      expect(appcast.to_s).to eq("https://brew.sh")
-    end
-  end
-
-  describe "#to_yaml" do
-    let(:yaml) { [uri, params].to_yaml }
-
-    context "with empty parameters" do
-      it "returns an YAML serialized array composed of the URI and parameters" do
-        expect(appcast.to_yaml).to eq(yaml)
-      end
-    end
-  end
-end
diff --git a/Library/Homebrew/test/cask/dsl_spec.rb b/Library/Homebrew/test/cask/dsl_spec.rb
index a9da25e4af..106770a4f5 100644
--- a/Library/Homebrew/test/cask/dsl_spec.rb
+++ b/Library/Homebrew/test/cask/dsl_spec.rb
@@ -365,30 +365,6 @@ describe Cask::DSL, :cask do
     end
   end
 
-  describe "appcast stanza" do
-    let(:token) { "with-appcast" }
-
-    it "allows appcasts to be specified" do
-      expect(cask.appcast.to_s).to match(/^http/)
-    end
-
-    context "when multiple appcasts are defined" do
-      let(:token) { "invalid/invalid-appcast-multiple" }
-
-      it "raises an error" do
-        expect { cask }.to raise_error(Cask::CaskInvalidError, /'appcast' stanza may only appear once/)
-      end
-    end
-
-    context "when appcast URL is invalid" do
-      let(:token) { "invalid/invalid-appcast-url" }
-
-      it "refuses to load" do
-        expect { cask }.to raise_error(Cask::CaskInvalidError)
-      end
-    end
-  end
-
   describe "depends_on stanza" do
     let(:token) { "invalid/invalid-depends-on-key" }
 
diff --git a/Library/Homebrew/test/cleanup_spec.rb b/Library/Homebrew/test/cleanup_spec.rb
index 4fee43e3f2..ae843e2384 100644
--- a/Library/Homebrew/test/cleanup_spec.rb
+++ b/Library/Homebrew/test/cleanup_spec.rb
@@ -167,7 +167,7 @@ describe Homebrew::Cleanup do
     end
 
     context "when given a `:latest` cask" do
-      let(:cask) { Cask::CaskLoader.load("latest-with-appcast") }
+      let(:cask) { Cask::CaskLoader.load("latest") }
 
       it "does not remove the download for the latest version" do
         download = Cask::Cache.path/"#{cask.token}--#{cask.version}"
diff --git a/Library/Homebrew/test/completions_spec.rb b/Library/Homebrew/test/completions_spec.rb
index 20a436c1db..528b0ced1c 100644
--- a/Library/Homebrew/test/completions_spec.rb
+++ b/Library/Homebrew/test/completions_spec.rb
@@ -208,9 +208,9 @@ describe Homebrew::Completions do
 
       it "handles --[no]- options correctly" do
         options = described_class.command_options("audit")
-        expect(options.key?("--appcast")).to be true
-        expect(options.key?("--no-appcast")).to be true
-        expect(options["--appcast"] == options["--no-appcast"]).to be true
+        expect(options.key?("--signing")).to be true
+        expect(options.key?("--no-signing")).to be true
+        expect(options["--signing"] == options["--no-signing"]).to be true
       end
 
       it "return an empty array if command is not found" do
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-without-appcast.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-with-livecheck.rb
similarity index 64%
rename from Library/Homebrew/test/support/fixtures/cask/Casks/devmate-without-appcast.rb
rename to Library/Homebrew/test/support/fixtures/cask/Casks/devmate-with-livecheck.rb
index fc3f177721..d2274ea9b7 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-without-appcast.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-with-livecheck.rb
@@ -1,11 +1,14 @@
-cask "devmate-without-appcast" do
+cask "devmate-with-livecheck" do
   version "1.0"
   sha256 "a69e7357bea014f4c14ac9699274f559086844ffa46563c4619bf1addfd72ad9"
 
-  # dl.devmate.com/com.my.fancyapp was verified as official when first introduced to the cask
   url "https://dl.devmate.com/com.my.fancyapp/app_#{version}.zip"
   name "DevMate"
   homepage "https://www.brew.sh/"
 
+  livecheck do
+    url "https://updates.devmate.com/com.my.fancyapp.app.xml"
+  end
+
   app "DevMate.app"
 end
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-with-appcast.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-without-livecheck.rb
similarity index 55%
rename from Library/Homebrew/test/support/fixtures/cask/Casks/devmate-with-appcast.rb
rename to Library/Homebrew/test/support/fixtures/cask/Casks/devmate-without-livecheck.rb
index 5a83a2b1ef..37c845f1f4 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-with-appcast.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/devmate-without-livecheck.rb
@@ -1,10 +1,8 @@
-cask "devmate-with-appcast" do
+cask "devmate-without-livecheck" do
   version "1.0"
   sha256 "a69e7357bea014f4c14ac9699274f559086844ffa46563c4619bf1addfd72ad9"
 
-  # dl.devmate.com/com.my.fancyapp was verified as official when first introduced to the cask
   url "https://dl.devmate.com/com.my.fancyapp/app_#{version}.zip"
-  appcast "https://updates.devmate.com/com.my.fancyapp.app.xml"
   name "DevMate"
   homepage "https://www.brew.sh/"
 
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-without-appcast.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-with-livecheck.rb
similarity index 65%
rename from Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-without-appcast.rb
rename to Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-with-livecheck.rb
index 179d530fd5..3d718ce243 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-without-appcast.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-with-livecheck.rb
@@ -1,11 +1,14 @@
-cask "hockeyapp-without-appcast" do
+cask "hockeyapp-with-livecheck" do
   version "1.0,123"
   sha256 "a69e7357bea014f4c14ac9699274f559086844ffa46563c4619bf1addfd72ad9"
 
-  # rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1 was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1/app_versions/#{version.csv.second}?format=zip"
   name "HockeyApp"
   homepage "https://www.brew.sh/"
 
+  livecheck do
+    url "https://rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1"
+  end
+
   app "HockeyApp.app"
 end
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-with-appcast.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-without-livecheck.rb
similarity index 55%
rename from Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-with-appcast.rb
rename to Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-without-livecheck.rb
index 05a6aee83a..4058156c3c 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-with-appcast.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/hockeyapp-without-livecheck.rb
@@ -1,10 +1,8 @@
-cask "hockeyapp-with-appcast" do
+cask "hockeyapp-without-livecheck" do
   version "1.0,123"
   sha256 "a69e7357bea014f4c14ac9699274f559086844ffa46563c4619bf1addfd72ad9"
 
-  # rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1 was verified as official when first introduced to the cask
   url "https://rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1/app_versions/#{version.csv.second}?format=zip"
-  appcast "https://rink.hockeyapp.net/api/2/apps/67503a7926431872c4b6c1549f5bd6b1"
   name "HockeyApp"
   homepage "https://www.brew.sh/"
 
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-livecheck-skip.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-livecheck-skip.rb
new file mode 100644
index 0000000000..fdc233aa8e
--- /dev/null
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-livecheck-skip.rb
@@ -0,0 +1,13 @@
+cask "latest-with-livecheck-skip" do
+  version :latest
+  sha256 :no_check
+
+  url "file://#{TEST_FIXTURE_DIR}/cask/caffeine.zip"
+  homepage "https://brew.sh/with-livecheck-skip"
+
+  livecheck do
+    skip "no version information available"
+  end
+
+  app "Caffeine.app"
+end
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-livecheck.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-livecheck.rb
new file mode 100644
index 0000000000..f65ef898ce
--- /dev/null
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-livecheck.rb
@@ -0,0 +1,13 @@
+cask "latest-with-livecheck" do
+  version :latest
+  sha256 :no_check
+
+  url "file://#{TEST_FIXTURE_DIR}/cask/caffeine.zip"
+  homepage "https://brew.sh/with-livecheck"
+
+  livecheck do
+    url "https://brew.sh/with-livecheck/changelog"
+  end
+
+  app "Caffeine.app"
+end
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-appcast.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/latest.rb
similarity index 69%
rename from Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-appcast.rb
rename to Library/Homebrew/test/support/fixtures/cask/Casks/latest.rb
index ad893cf7a6..2f886bc4ba 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/latest-with-appcast.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/latest.rb
@@ -1,9 +1,8 @@
-cask "latest-with-appcast" do
+cask "latest" do
   version :latest
   sha256 :no_check
 
   url "file://#{TEST_FIXTURE_DIR}/cask/caffeine.zip"
-  appcast "https://brew.sh/appcast.xml"
   homepage "https://brew.sh/with-appcast"
 
   app "Caffeine.app"
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/sourceforge-with-appcast.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/sourceforge-with-livecheck.rb
similarity index 56%
rename from Library/Homebrew/test/support/fixtures/cask/Casks/sourceforge-with-appcast.rb
rename to Library/Homebrew/test/support/fixtures/cask/Casks/sourceforge-with-livecheck.rb
index ad813becfa..5c42cec2f2 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/sourceforge-with-appcast.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/sourceforge-with-livecheck.rb
@@ -1,7 +1,10 @@
-cask "sourceforge-with-appcast" do
+cask "sourceforge-with-livecheck" do
   version "1.2.3"
 
   url "https://downloads.sourceforge.net/something/Something-1.2.3.dmg"
-  appcast "https://sourceforge.net/projects/something/rss"
   homepage "https://sourceforge.net/projects/something/"
+
+  livecheck do
+    url "https://sourceforge.net/projects/something/rss"
+  end
 end