diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 590cb21..c12585f 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -24,7 +24,7 @@ jobs:
       - name: Set up Ruby 3.1
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '2.6'
+          ruby-version: '3.1.4'
       - uses: actions/cache@v3
         with:
           path: vendor/bundle
@@ -34,7 +34,7 @@ jobs:
       - name: Install
         run: |
           cp .env.build .env
-          gem install bundler -v 2.5.6
+          gem install bundler -v 2.4.20
           bundle config path vendor/bundle
           bundle install --jobs 4 --retry 3
       - name: Lint and Test
diff --git a/.github/workflows/parallel_ci.yml b/.github/workflows/parallel_ci.yml
index ce143ba..25d23b8 100644
--- a/.github/workflows/parallel_ci.yml
+++ b/.github/workflows/parallel_ci.yml
@@ -29,7 +29,7 @@ jobs:
             - name: Set up Ruby 3.1
               uses: ruby/setup-ruby@v1
               with:
-                ruby-version: "2.6"
+                ruby-version: "3.1.4"
                 bundler-cache: true
         
             - name: Run Specs
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 82495c2..d5d581c 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -23,7 +23,7 @@ jobs:
       - name: Set up Ruby 3.1
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '2.6'
+          ruby-version: '3.1.4'
       - uses: actions/cache@v3
         with:
           path: vendor/bundle
@@ -33,7 +33,7 @@ jobs:
       - name: Install
         run: |
           cp .env.build .env
-          gem install bundler -v 2.5.6
+          gem install bundler -v 2.4.20
           bundle config path vendor/bundle
           bundle install --jobs 4 --retry 3
       - name: Lint and Test
diff --git a/Dockerfile b/Dockerfile
index d82aaec..75323ae 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM phusion/passenger-full:2.0.1
+FROM phusion/passenger-full:2.5.1
 LABEL maintainer="kgarza@datacite.org"
 
 # Set correct environment variables.
@@ -12,7 +12,7 @@ RUN usermod -a -G docker_env app
 CMD ["/sbin/my_init"]
 
 # Use Ruby 3.1.4
-RUN bash -lc 'rvm --default use ruby-2.6.8'
+RUN bash -lc 'rvm --default use ruby-3.1.4'
 
 # Update installed APT packages
 RUN apt-get update && apt-get upgrade -y --allow-unauthenticated -o Dpkg::Options::="--force-confold" && \