diff --git a/Dockerfile b/Dockerfile
index e0c2b4b85..dc4ee0dc0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,7 +24,7 @@ COPY ./app/views ./app/views
 
 RUN echo "gem 'shakapacker'" > Gemfile && ./bin/shakapacker
 
-FROM ruby:3.2.2-alpine as app
+FROM ruby:3.2.2-alpine3.18 as app
 
 ENV RAILS_ENV=production
 ENV BUNDLE_WITHOUT="development:test"