diff --git a/uw_sites_all.install b/uw_sites_all.install
index be65eecb1273537456acaceab436c002a0667527..ed7fb4ae8354ac4e3631acc519dbf6584bd4d16b 100644
--- a/uw_sites_all.install
+++ b/uw_sites_all.install
@@ -2094,4 +2094,10 @@ function uw_sites_all_update_9168(&$sandbox) {
       strtotime('+1 day')
     );
   }
+
+/**
+ * Installing views_tree module.
+ */
+function uw_sites_all_update_9169(&$sandbox) {
+  \Drupal::service('module_installer')->install(['views_tree']);
 }