diff --git a/Dockerfile b/Dockerfile
index fb308e4..e4faa06 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG RUBY_VERSION=3.2.2
+ARG RUBY_VERSION=3.3
 FROM ruby:$RUBY_VERSION-slim
 
 RUN apt-get update \