diff --git a/.github/workflows/jekyll-build.yml b/.github/workflows/jekyll-build.yml
index fa310603..f73bc630 100644
--- a/.github/workflows/jekyll-build.yml
+++ b/.github/workflows/jekyll-build.yml
@@ -201,7 +201,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@a0102e0972be65f351c307e2d64b9314a57c8073  # v1.324.0
         with:
-          ruby-version: '3.3'
+          ruby-version: '3.4'
 
       - name: Install dependencies
         run: |
diff --git a/Dockerfile b/Dockerfile
index 657d0f53..355a428c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.3-bookworm AS base
+FROM ruby:3.4-bookworm AS base
 
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]