diff -u b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
--- b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
+++ b/core/lib/Drupal/Core/Config/Entity/ConfigEntityBase.php
@@ -308,19 +308,11 @@
         $this->addDependency('module', $definition['provider']);
         // Plugins can declare additional dependencies in their definition.
         if (isset($definition['config_dependencies'])) {
-          foreach ($definition['config_dependencies'] as $type => $dependencies) {
-            foreach ($dependencies as $dependency) {
-              $this->addDependency($type, $dependency);
-            }
-          }
+          $this->addDependencies($definition['config_dependencies']);
         }
         // If a plugin is configurable, calculate its dependencies.
         if ($instance instanceof ConfigurablePluginInterface && $plugin_dependencies = $instance->calculateDependencies()) {
-          foreach ($plugin_dependencies as $type => $dependencies) {
-            foreach ($dependencies as $dependency) {
-              $this->addDependency($type, $dependency);
-            }
-          }
+          $this->addDependencies($plugin_dependencies);
         }
       }
     }