README.md in unicode-numeric_value-1.8.0 vs README.md in unicode-numeric_value-1.9.0

- old
+ new

@@ -1,12 +1,12 @@
 # Unicode::NumericValue [![[version]](https://badge.fury.io/rb/unicode-numeric_value.svg)](https://badge.fury.io/rb/unicode-numeric_value)  [![[ci]](https://github.com/janlelis/unicode-numeric_value/workflows/Test/badge.svg)](https://github.com/janlelis/unicode-numeric_value/actions?query=workflow%3ATest)
 
 Convert a Unicode character into its numeric value.
 
-Unicode version: **14.0.0** (September 2021)
+Unicode version: **15.0.0** (September 2022)
 
-Supported Rubies: **3.0**, **2.7**
+Supported Rubies: **3.1**, **3.0**, **2.7**
 
 Old Rubies that might still work: **2.6**, **2.5**, **2.4**, **2.3**, **2.2**, **2.1**, **2.0**
 
 ## Gemfile
 
@@ -59,7 +59,7 @@
 
 - [unicode-x](https://github.com/janlelis/unicode-x): more Unicode related micro libraries
 
 ## MIT License
 
-- Copyright (C) 2016-2021 Jan Lelis <https://janlelis.com>. Released under the MIT license.
+- Copyright (C) 2016-2022 Jan Lelis <https://janlelis.com>. Released under the MIT license.
 - Unicode data: https://www.unicode.org/copyright.html#Exhibit1