diff --git a/Dockerfile-bundle-base b/Dockerfile-bundle-base
index 29b71b0..6eb6c26 100644
--- a/Dockerfile-bundle-base
+++ b/Dockerfile-bundle-base
@@ -1,4 +1,4 @@
-FROM ruby:3.4.7-alpine
+FROM ruby:4.0.1-alpine
 
 # Installation path
 ENV HOME=/app