diff --git a/Dockerfile b/Dockerfile
index 12a395b..2ff5329 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.2.2-alpine AS base
+FROM ruby:3.2.2-alpine3.18 AS base
 ARG BUNDLER_VERSION=2.4.3
 ARG BUNDLE_WITHOUT="development:test"
 ARG BASE_PACKAGES="tz git vim curl imagemagick ttf-liberation msttcorefonts-installer fontconfig libc6-compat gcompat"