diff --git a/README.md b/README.md
index f36760b..bfe361e 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@ _A `Dockerfile` that is used on _fastlane_'s CIs for testing _fastlane_ on a Lin
 
 ### Tools included
 
-- Ruby 3.3
+- Ruby 3.4
 - Python 3.8.13
 - Java 21
 - NodeJS 20