diff --git a/dockerfiles/alpine.Dockerfile b/dockerfiles/alpine.Dockerfile
index 636144d..8b8dab4 100644
--- a/dockerfiles/alpine.Dockerfile
+++ b/dockerfiles/alpine.Dockerfile
@@ -1,5 +1,5 @@
 ARG RUBY_VERSION="3.4.3"
-FROM ruby:${RUBY_VERSION}-alpine AS base
+FROM docker.io/library/ruby:${RUBY_VERSION}-alpine AS base
 
 WORKDIR /app
 
diff --git a/dockerfiles/bookworm.Dockerfile b/dockerfiles/bookworm.Dockerfile
index 3a24648..03a90bd 100644
--- a/dockerfiles/bookworm.Dockerfile
+++ b/dockerfiles/bookworm.Dockerfile
@@ -1,5 +1,5 @@
 ARG RUBY_VERSION="3.4.3"
-FROM ruby:${RUBY_VERSION}-slim-bookworm AS base
+FROM docker.io/library/ruby:${RUBY_VERSION}-slim-bookworm AS base
 
 WORKDIR /app