docs: update README

kenjis · kenjis · commit 20f1b17a7c9a · 2021-02-03T14:48:27.000+09:00
diff --git a/README.md b/README.md
@@ -24,7 +24,7 @@ Provides helper traits for PHPUnit.
 
 ## Requirements
 
-- PHP 7.2 or later
+- PHP 7.3 or later
 
 ## Installation
 
