diff --git a/playbooks/roles/install-ansible/tasks/main.yaml b/playbooks/roles/install-ansible/tasks/main.yaml
index dabfba0ad2..76a9223dec 100644
--- a/playbooks/roles/install-ansible/tasks/main.yaml
+++ b/playbooks/roles/install-ansible/tasks/main.yaml
@@ -13,7 +13,9 @@
   - name: Add ARA to defaults if enabled
     when: install_ansible_ara_enable
     set_fact:
-      _install_ansible_requirements: '{{ _install_ansible_requirements + ["ara[server]"] }}'
+      # Ruamel.yaml 0.18.0 and newer removed a bunch of deprecated functions
+      # that ARA depends on. Cap the version until ARA updates.
+      _install_ansible_requirements: '{{ _install_ansible_requirements + ["ara[server]", "ruamel.yaml<0.18.0"] }}'
 
   - name: Set variable
     # NOTE(ianw) the block when: statement is calcuated for each task