diff --git a/Dockerfile b/Dockerfile
index 84d45858..48cdaed1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:4.0.2 AS base
+FROM ruby:4.0.3 AS base
 
 RUN bundle config set frozen 'true' && \
     bundle config set path '/vendor/bundle'