1 files changed, 9 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/multibyte/unicode.rb b/activesupport/lib/active_support/multibyte/unicode.rb
index 94fb0a48aa..cb89d45c92 100644
--- a/activesupport/lib/active_support/multibyte/unicode.rb
+++ b/activesupport/lib/active_support/multibyte/unicode.rb
@@ -10,7 +10,7 @@ module ActiveSupport
       NORMALIZATION_FORMS = [:c, :kc, :d, :kd]
 
       # The Unicode version that is supported by the implementation
-      UNICODE_VERSION = '6.0.0'
+      UNICODE_VERSION = '6.1.0'
 
       # The default normalization used for operations that require normalization. It can be set to any of the
       # normalizations in NORMALIZATION_FORMS.
@@ -293,9 +293,17 @@ module ActiveSupport
         apply_mapping string, :uppercase_mapping
       end
 
+      def swapcase(string)
+        apply_mapping string, :swapcase_mapping
+      end
+
       # Holds data about a codepoint in the Unicode database
       class Codepoint
         attr_accessor :code, :combining_class, :decomp_type, :decomp_mapping, :uppercase_mapping, :lowercase_mapping
+
+        def swapcase_mapping
+          uppercase_mapping > 0 ? uppercase_mapping : lowercase_mapping
+        end
       end
 
       # Holds static data from the Unicode database