diff --git a/activesupport/lib/active_support/ordered_options.rb b/activesupport/lib/active_support/ordered_options.rb
index 494d0c6b78..9bec44a5fd 100644
--- a/activesupport/lib/active_support/ordered_options.rb
+++ b/activesupport/lib/active_support/ordered_options.rb
@@ -116,6 +116,14 @@ def inspect
       "#<#{self.class.name} #{to_h.inspect}>"
     end
 
+    def to_s
+      to_h.to_s
+    end
+
+    def pretty_print(pp)
+      pp.pp_hash(to_h)
+    end
+
     alias_method :own_key?, :key?
     private :own_key?
 
diff --git a/activesupport/test/ordered_options_test.rb b/activesupport/test/ordered_options_test.rb
index 6ac21fae72..8eca0fe73b 100644
--- a/activesupport/test/ordered_options_test.rb
+++ b/activesupport/test/ordered_options_test.rb
@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require "pp"
 require_relative "abstract_unit"
 require "active_support/ordered_options"
 
@@ -278,4 +279,46 @@ def test_inheritable_options_count
 
     assert_equal 3, object.count
   end
+
+  def test_ordered_options_to_s
+    object = ActiveSupport::OrderedOptions.new
+    assert_equal "{}", object.to_s
+
+    object.one = "first value"
+    object[:two] = "second value"
+    object["three"] = "third value"
+
+    assert_equal "{:one=>\"first value\", :two=>\"second value\", :three=>\"third value\"}", object.to_s
+  end
+
+  def test_inheritable_options_to_s
+    object = ActiveSupport::InheritableOptions.new(one: "first value")
+    assert_equal "{:one=>\"first value\"}", object.to_s
+
+    object[:two] = "second value"
+    object["three"] = "third value"
+    assert_equal "{:one=>\"first value\", :two=>\"second value\", :three=>\"third value\"}", object.to_s
+  end
+
+  def test_odrered_options_pp
+    object = ActiveSupport::OrderedOptions.new
+    object.one = "first value"
+    object[:two] = "second value"
+    object["three"] = "third value"
+
+    io = StringIO.new
+    PP.pp(object, io)
+    assert_equal "{:one=>\"first value\", :two=>\"second value\", :three=>\"third value\"}\n", io.string
+  end
+
+  def test_inheritable_options_pp
+    object = ActiveSupport::InheritableOptions.new(one: "first value")
+    object[:two] = "second value"
+    object["three"] = "third value"
+    assert_equal "{:one=>\"first value\", :two=>\"second value\", :three=>\"third value\"}", object.to_s
+
+    io = StringIO.new
+    PP.pp(object, io)
+    assert_equal "{:one=>\"first value\", :two=>\"second value\", :three=>\"third value\"}\n", io.string
+  end
 end