diff --git a/Dockerfile b/Dockerfile
index 4aa5e33..d9c0d2a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 FROM ghcr.io/unb-libraries/drupal:10.x-1.x-unblib
 
 # Install additional OS packages.
-ENV ADDITIONAL_OS_PACKAGES="postfix php-ldap php81-pecl-redis"
+ENV ADDITIONAL_OS_PACKAGES="postfix php-ldap php-xmlreader php-zip php81-pecl-redis"
 ENV DRUPAL_SITE_ID="honorary"
 ENV DRUPAL_SITE_URI="graduations.lib.unb.ca"
 ENV DRUPAL_SITE_UUID="52bca593-2542-4a35-9ebd-1da0d40bf67b"