diff --git a/applications/ruby-the-coffee-bar-apps/Dockerfile b/applications/ruby-the-coffee-bar-apps/Dockerfile
index 01aa7bc..e59a216 100644
--- a/applications/ruby-the-coffee-bar-apps/Dockerfile
+++ b/applications/ruby-the-coffee-bar-apps/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.0
+FROM ruby:3.3.5
 
 WORKDIR /app