diff --git a/tools/ansible/vars/deploy_vars.yml b/tools/ansible/vars/deploy_vars.yml
index 96f75b9..aef8d06 100644
--- a/tools/ansible/vars/deploy_vars.yml
+++ b/tools/ansible/vars/deploy_vars.yml
@@ -37,6 +37,8 @@ drupal_settings:
           trusted_hosts:
             - '^www\.oliverdavies\.uk$'
           extra_parameters: |
+            $settings['deployment_identifier'] = '{{ ansistrano_release_version }}';
+
             $settings['config_exclude_modules'] = [
               'devel',
               'stage_file_proxy',