diff --git a/README.md b/README.md
index a35405a..46d32e7 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,10 @@
-# LJ Range Slider plugin for Craft CMS 3.x
+# LJ Range Slider plugin for Craft CMS 4.x
 
 An easy-to-use, flexible and responsive range slider for Craft CMS.
 
 ## Requirements
 
-This plugin requires Craft CMS 3.0.0 or later.
+This plugin requires Craft CMS 4.0.0 or later.
 
 ## Installation