diff --git a/Library/Homebrew/Gemfile.lock b/Library/Homebrew/Gemfile.lock
index 8565c13ac0..8567a46f92 100644
--- a/Library/Homebrew/Gemfile.lock
+++ b/Library/Homebrew/Gemfile.lock
@@ -86,7 +86,7 @@ GEM
       ast (~> 2.4.1)
     patchelf (1.4.0)
       elftools (>= 1.2)
-    plist (3.6.0)
+    plist (3.7.0)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
diff --git a/Library/Homebrew/formula_cellar_checks.rb b/Library/Homebrew/formula_cellar_checks.rb
index dfdd699e6a..700ed7c0ad 100644
--- a/Library/Homebrew/formula_cellar_checks.rb
+++ b/Library/Homebrew/formula_cellar_checks.rb
@@ -232,7 +232,7 @@ module FormulaCellarChecks
     return unless prefix.directory?
 
     plist = begin
-      Plist.parse_xml(plist)
+      Plist.parse_xml(plist, marshal: false)
     rescue
       nil
     end
diff --git a/Library/Homebrew/sorbet/rbi/gems/plist@3.6.0.rbi b/Library/Homebrew/sorbet/rbi/gems/plist@3.7.0.rbi
similarity index 93%
rename from Library/Homebrew/sorbet/rbi/gems/plist@3.6.0.rbi
rename to Library/Homebrew/sorbet/rbi/gems/plist@3.7.0.rbi
index 4e521bb855..d621be496b 100644
--- a/Library/Homebrew/sorbet/rbi/gems/plist@3.6.0.rbi
+++ b/Library/Homebrew/sorbet/rbi/gems/plist@3.7.0.rbi
@@ -6,7 +6,7 @@
 
 module Plist
   class << self
-    def parse_xml(filename_or_xml); end
+    def parse_xml(filename_or_xml, options = T.unsafe(nil)); end
   end
 end
 
@@ -38,7 +38,7 @@ class Plist::Emit::PlistBuilder
 end
 
 class Plist::Listener
-  def initialize; end
+  def initialize(options = T.unsafe(nil)); end
 
   def open; end
   def open=(_arg0); end
@@ -90,10 +90,12 @@ class Plist::PString < ::Plist::PTag
 end
 
 class Plist::PTag
-  def initialize; end
+  def initialize(options); end
 
   def children; end
   def children=(_arg0); end
+  def options; end
+  def options=(_arg0); end
   def text; end
   def text=(_arg0); end
   def to_ruby; end
diff --git a/Library/Homebrew/system_command.rb b/Library/Homebrew/system_command.rb
index 4f5b68e38c..3ddd2a039b 100644
--- a/Library/Homebrew/system_command.rb
+++ b/Library/Homebrew/system_command.rb
@@ -357,7 +357,7 @@ class SystemCommand
           Regexp.last_match(1)
         end
 
-        Plist.parse_xml(output)
+        Plist.parse_xml(output, marshal: false)
       end
     end
 
diff --git a/Library/Homebrew/vendor/bundle/bundler/setup.rb b/Library/Homebrew/vendor/bundle/bundler/setup.rb
index 08790c975f..d5a6a8e9ae 100644
--- a/Library/Homebrew/vendor/bundle/bundler/setup.rb
+++ b/Library/Homebrew/vendor/bundle/bundler/setup.rb
@@ -81,7 +81,7 @@ $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version
 $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/sorbet-runtime-0.5.10461/lib")
 $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/parlour-8.1.0/lib")
 $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/patchelf-1.4.0/lib")
-$:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/plist-3.6.0/lib")
+$:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/plist-3.7.0/lib")
 $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/pry-0.14.2/lib")
 $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/rack-3.0.4.1/lib")
 $:.unshift File.expand_path("#{__dir__}/../#{RUBY_ENGINE}/#{Gem.ruby_api_version}/gems/unparser-0.6.4/lib")
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist.rb
similarity index 100%
rename from Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist.rb
rename to Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist.rb
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/generator.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/generator.rb
similarity index 100%
rename from Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/generator.rb
rename to Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/generator.rb
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/parser.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/parser.rb
similarity index 88%
rename from Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/parser.rb
rename to Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/parser.rb
index f325988b05..6b83ed42ed 100755
--- a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/parser.rb
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/parser.rb
@@ -26,8 +26,13 @@ module Plist
   # can't be parsed into a Time object, please create an issue
   # attaching your plist file at https://github.com/patsplat/plist/issues
   # so folks can implement the proper support.
-  def self.parse_xml(filename_or_xml)
-    listener = Listener.new
+  #
+  # By default, <data> will be assumed to be a marshaled Ruby object and
+  # interpreted with <tt>Marshal.load</tt>. Pass <tt>marshal: false</tt>
+  # to disable this behavior and return the raw binary data as an IO
+  # object instead.
+  def self.parse_xml(filename_or_xml, options={})
+    listener = Listener.new(options)
     # parser = REXML::Parsers::StreamParser.new(File.new(filename), listener)
     parser = StreamParser.new(filename_or_xml, listener)
     parser.parse
@@ -39,13 +44,14 @@ module Plist
 
     attr_accessor :result, :open
 
-    def initialize
+    def initialize(options={})
       @result = nil
       @open   = []
+      @options = { :marshal => true }.merge(options).freeze
     end
 
     def tag_start(name, attributes)
-      @open.push PTag.mappings[name].new
+      @open.push PTag.mappings[name].new(@options)
     end
 
     def text(contents)
@@ -154,9 +160,10 @@ module Plist
       mappings[key] = sub_class
     end
 
-    attr_accessor :text, :children
-    def initialize
+    attr_accessor :text, :children, :options
+    def initialize(options)
       @children = []
+      @options = options
     end
 
     def to_ruby
@@ -244,13 +251,13 @@ module Plist
     def to_ruby
       data = Base64.decode64(text.gsub(/\s+/, '')) unless text.nil?
       begin
-        return Marshal.load(data)
+        return Marshal.load(data) if options[:marshal]
       rescue Exception
-        io = StringIO.new
-        io.write data
-        io.rewind
-        return io
       end
+      io = StringIO.new
+      io.write data
+      io.rewind
+      io
     end
   end
 end
diff --git a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/version.rb b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/version.rb
similarity index 57%
rename from Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/version.rb
rename to Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/version.rb
index 936004a70b..4d1d5685f6 100644
--- a/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.6.0/lib/plist/version.rb
+++ b/Library/Homebrew/vendor/bundle/ruby/2.6.0/gems/plist-3.7.0/lib/plist/version.rb
@@ -1,5 +1,5 @@
 # encoding: utf-8
 
 module Plist
-  VERSION = '3.6.0'.freeze
+  VERSION = '3.7.0'.freeze
 end