diff --git a/defaults/main.yml b/defaults/main.yml
index 855e828..50c3b88 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -38,6 +38,7 @@ wordpress_php_prereq:
   - 'php{{ php_version }}-zip'
   - 'php{{ php_version }}-curl'
   - 'php{{ php_version }}-opcache'
+  - 'php{{ php_version }}-xml'
   - php-pear
   - php-date
   - imagemagick