diff --git a/sites/default/settings.php b/sites/default/settings.php
index fbc1e688a..9a625fa10 100755
--- a/sites/default/settings.php
+++ b/sites/default/settings.php
@@ -1,5 +1,10 @@
 <?php
 
+/**
+ * Load services definition file.
+ */
+$settings['container_yamls'][] = __DIR__ . '/services.yml';
+
 /**
  * Include the Pantheon-specific settings file.
  *