diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 8322900f..5712d966 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -25,7 +25,7 @@ jobs:
   build-and-publish-image:
     if: github.event_name == 'workflow_dispatch' || startsWith(github.event.release.tag_name, 'v')
     name: Build and publish image
-    uses: alphagov/govuk-infrastructure/.github/workflows/build-and-push-image.yml@main
+    uses: alphagov/govuk-infrastructure/.github/workflows/build-and-push-multiarch-image.yml@main
     with:
       gitRef: ${{ inputs.gitRef || github.event.release.tag_name }}
     permissions:
diff --git a/.ruby-version b/.ruby-version
index be94e6f5..351227fc 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.2.2
+3.2.4
diff --git a/Dockerfile b/Dockerfile
index a047fd1e..ddb390bb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,9 +1,9 @@
-ARG ruby_version=3.2.2
+ARG ruby_version=3.2
 ARG base_image=ghcr.io/alphagov/govuk-ruby-base:$ruby_version
 ARG builder_image=ghcr.io/alphagov/govuk-ruby-builder:$ruby_version
 
 
-FROM $builder_image AS builder
+FROM --platform=$TARGETPLATFORM $builder_image AS builder
 
 WORKDIR $APP_HOME
 COPY Gemfile* .ruby-version ./
@@ -12,7 +12,7 @@ COPY . .
 RUN bootsnap precompile --gemfile .
 
 
-FROM $base_image
+FROM --platform=$TARGETPLATFORM $base_image
 
 ENV GOVUK_APP_NAME=authenticating-proxy