diff --git a/docker/mock-server/Dockerfile b/docker/mock-server/Dockerfile
index 96007cb..e1eb821 100644
--- a/docker/mock-server/Dockerfile
+++ b/docker/mock-server/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.2.0 as dev
+FROM ruby:3.3.0 as dev
 
 ENV RAILS_ENV development