README.md in bundleup-2.4.2 vs README.md in bundleup-2.5.0

- old
+ new

@@ -18,10 +18,10 @@
 <img src="./demo.gif" width="682" height="351" alt="Sample output">
 
 ## Requirements
 
 - Bundler 1.16 or later
-- Ruby 3.0 or later
+- Ruby 3.1 or later
 
 ## Usage
 
 Assuming you have a Ruby environment, all you need to do is install the bundleup gem:
 