diff --git a/group_vars/bibdata/common.yml b/group_vars/bibdata/common.yml
index e260677e5e..0d15ea45b9 100644
--- a/group_vars/bibdata/common.yml
+++ b/group_vars/bibdata/common.yml
@@ -4,7 +4,7 @@ passenger_ruby: "/usr/local/bin/ruby"
 passenger_extra_http_config:
   - "passenger_preload_bundler on;"
 install_ruby_from_source: true
-ruby_version_override: "ruby-3.3.6"
+ruby_version_override: "ruby-3.4.1"
 bundler_version: "2.5.17"
 rails_app_dependencies:
   - libpq-dev
diff --git a/roles/bibdata/tasks/main.yml b/roles/bibdata/tasks/main.yml
index 6109461553..4ef4707388 100644
--- a/roles/bibdata/tasks/main.yml
+++ b/roles/bibdata/tasks/main.yml
@@ -8,21 +8,21 @@
   ansible.builtin.include_tasks: mounts.yml
 
 - name: bibdata | update rubygems
-  ansible.builtin.command: gem update --system 3.5.17
+  ansible.builtin.command: gem update --system 3.6.1
   become: true
   register: update_rubygems
   changed_when: '"Latest version already installed. Done." not in update_rubygems.stdout'
   tags: rubygems
 
 - name: bibdata | install default bundler
-  ansible.builtin.command: gem install --default bundler:2.5.17
+  ansible.builtin.command: gem install --default bundler:2.6.1
   become: true
   register: install_default_bundler
-  changed_when: '"Fetching bundler-2.5.17.gem" in install_default_bundler.stdout'
+  changed_when: '"Fetching bundler-2.6.1.gem" in install_default_bundler.stdout'
   tags: rubygems
 
 - name: bibdata | remove old default bundler
   ansible.builtin.file:
-    path: /usr/local/lib/ruby/gems/3.1.0/specifications/default/bundler-2.5.7.gemspec
+    path: /usr/local/lib/ruby/gems/3.1.0/specifications/default/bundler-2.5.17.gemspec
     state: absent
   tags: rubygems