diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11bc0456d6..a65afb9e33 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
 #### Features
 
 * Your contribution here.
+* [#2005](https://github.com/ruby-grape/grape/pull/2005): Content types registrable - [@ericproulx](https://github.com/ericproulx).
 * [#2003](https://github.com/ruby-grape/grape/pull/2003): Upgraded Rubocop to 0.80.1 - [@ericproulx](https://github.com/ericproulx).
 * [#2002](https://github.com/ruby-grape/grape/pull/2002): Objects allocation optimization (lazy_lookup) - [@ericproulx](https://github.com/ericproulx).
 
diff --git a/lib/grape.rb b/lib/grape.rb
index e5fcc98023..125a2b4c63 100644
--- a/lib/grape.rb
+++ b/lib/grape.rb
@@ -218,7 +218,8 @@ module ServeFile
 end
 
 require 'grape/config'
-require 'grape/util/content_types'
+require 'grape/content_types'
+
 require 'grape/util/lazy_value'
 require 'grape/util/lazy_block'
 require 'grape/util/endpoint_configuration'
diff --git a/lib/grape/content_types.rb b/lib/grape/content_types.rb
new file mode 100644
index 0000000000..2c19f97317
--- /dev/null
+++ b/lib/grape/content_types.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'grape/util/registrable'
+
+module Grape
+  module ContentTypes
+    extend Util::Registrable
+
+    # Content types are listed in order of preference.
+    CONTENT_TYPES = {
+      xml: 'application/xml',
+      serializable_hash: 'application/json',
+      json: 'application/json',
+      binary: 'application/octet-stream',
+      txt: 'text/plain'
+    }.freeze
+
+    class << self
+      def content_types_for_settings(settings)
+        return if settings.blank?
+
+        settings.each_with_object({}) { |value, result| result.merge!(value) }
+      end
+
+      def content_types_for(from_settings)
+        if from_settings.present?
+          from_settings
+        else
+          Grape::ContentTypes::CONTENT_TYPES.merge(default_elements)
+        end
+      end
+    end
+  end
+end
diff --git a/lib/grape/util/content_types.rb b/lib/grape/util/content_types.rb
deleted file mode 100644
index df5a7b008c..0000000000
--- a/lib/grape/util/content_types.rb
+++ /dev/null
@@ -1,28 +0,0 @@
-# frozen_string_literal: true
-
-module Grape
-  module ContentTypes
-    # Content types are listed in order of preference.
-    CONTENT_TYPES = { # rubocop:disable Style/MutableConstant
-      xml: 'application/xml',
-      serializable_hash: 'application/json',
-      json: 'application/json',
-      binary: 'application/octet-stream',
-      txt: 'text/plain'
-    }
-
-    def self.content_types_for_settings(settings)
-      return if settings.blank?
-
-      settings.each_with_object({}) { |value, result| result.merge!(value) }
-    end
-
-    def self.content_types_for(from_settings)
-      if from_settings.present?
-        from_settings
-      else
-        Grape::ContentTypes::CONTENT_TYPES
-      end
-    end
-  end
-end
diff --git a/spec/grape/middleware/formatter_spec.rb b/spec/grape/middleware/formatter_spec.rb
index 102bca8f15..7c73663b54 100644
--- a/spec/grape/middleware/formatter_spec.rb
+++ b/spec/grape/middleware/formatter_spec.rb
@@ -402,10 +402,10 @@ def self.call(_, _)
     let(:app) { ->(_env) { [200, {}, ['']] } }
     before do
       Grape::Formatter.register :invalid, InvalidFormatter
-      Grape::ContentTypes::CONTENT_TYPES[:invalid] = 'application/x-invalid'
+      Grape::ContentTypes.register :invalid, 'application/x-invalid'
     end
     after do
-      Grape::ContentTypes::CONTENT_TYPES.delete(:invalid)
+      Grape::ContentTypes.default_elements.delete(:invalid)
       Grape::Formatter.default_elements.delete(:invalid)
     end