diff --git a/Dockerfile b/Dockerfile
index 29a23037e..a6be122b2 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-ARG RUBY_VERSION=3.3.5
-ARG ALPINE_VERSION=3.20
+ARG RUBY_VERSION=3.3.6
+ARG ALPINE_VERSION=3.21
 FROM ruby:$RUBY_VERSION-alpine$ALPINE_VERSION
 
 ARG RAILS_VERSION=7.2.1