Update README.md

satoryu · web-flow · commit 2ad7868306fc · 2020-10-14T14:00:02.000+09:00
diff --git a/README.md b/README.md
@@ -11,7 +11,7 @@ A ruby library/gem for interacting with `.docx` files. currently capabilities in
 
 ### Prerequisites
 
-- Ruby 2.4 or later
+- Ruby 2.5 or later
 
 ### Install
 
