diff --git a/dockerfiles/ruby/Dockerfile b/dockerfiles/ruby/Dockerfile
index a39e4e2..6189dad 100644
--- a/dockerfiles/ruby/Dockerfile
+++ b/dockerfiles/ruby/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.1.2
+FROM ruby:4.0.6
 
 ARG UID
 ARG GID