diff --git a/Readme.md b/Readme.md
index 23e248b..9bb2ff0 100644
--- a/Readme.md
+++ b/Readme.md
@@ -18,7 +18,7 @@ $cache->save('yin', 'yang');
 echo 'yin and '.$cache->fetch('yin');
 ```
 
-ACache requires PHP 7.1 or later.
+ACache requires PHP 7.2 or later.
 
 
 ## Installation
@@ -213,4 +213,4 @@ All issues that break backwards compatibility are flagged [BC].
 * disable more chmod/chown/chgrp warnings in FilesystemCache
 
 ### next
-* 
\ No newline at end of file
+*