diff --git a/src/XmlSitemapGenerator.php b/src/XmlSitemapGenerator.php
index 46fe948..398700a 100644
--- a/src/XmlSitemapGenerator.php
+++ b/src/XmlSitemapGenerator.php
@@ -18,6 +18,7 @@ use Drupal\Core\State\StateInterface;
 use Drupal\Core\StringTranslation\StringTranslationTrait;
 use Drupal\Core\Url;
 use Psr\Log\LoggerInterface;
+use Drupal\Core\Cache\MemoryCache\MemoryCacheInterface;
 
 /**
  * XmlSitemap generator service class.
@@ -120,6 +121,13 @@ class XmlSitemapGenerator implements XmlSitemapGeneratorInterface {
    */
   protected $time;
 
+  /**
+   * The entity memory cache service.
+   *
+   * @var \Drupal\Core\Cache\MemoryCache\MemoryCacheInterface
+   */
+  protected $memoryCache;
+
   /**
    * Constructs a XmlSitemapGenerator object.
    *
@@ -143,8 +151,10 @@ class XmlSitemapGenerator implements XmlSitemapGeneratorInterface {
    *   The file system.
    * @param \Drupal\Component\Datetime\TimeInterface $time
    *   The time service.
+   * @param \Drupal\Core\Cache\MemoryCache\MemoryCacheInterface $memory_cache
+   *   The memory cache service.
    */
-  public function __construct(ConfigFactoryInterface $config_factory, StateInterface $state, LanguageManagerInterface $language_manager, LoggerInterface $logger, ModuleHandlerInterface $module_handler, EntityTypeManagerInterface $entity_type_manager, Connection $connection, MessengerInterface $messenger, FileSystemInterface $file_system, TimeInterface $time) {
+  public function __construct(ConfigFactoryInterface $config_factory, StateInterface $state, LanguageManagerInterface $language_manager, LoggerInterface $logger, ModuleHandlerInterface $module_handler, EntityTypeManagerInterface $entity_type_manager, Connection $connection, MessengerInterface $messenger, FileSystemInterface $file_system, TimeInterface $time, MemoryCacheInterface $memory_cache) {
     $this->config = $config_factory->getEditable('xmlsitemap.settings');
     $this->state = $state;
     $this->languageManager = $language_manager;
@@ -155,6 +165,7 @@ class XmlSitemapGenerator implements XmlSitemapGeneratorInterface {
     $this->messenger = $messenger;
     $this->fileSystem = $file_system;
     $this->time = $time;
+    $this->memoryCache = $memory_cache;
   }
 
   /**
@@ -574,6 +585,10 @@ class XmlSitemapGenerator implements XmlSitemapGeneratorInterface {
     else {
       $context['finished'] = $context['sandbox']['progress'] / $context['sandbox']['max'];
     }
+
+    // Flush the entity memory cache to avoid exhausting memory for every
+    // entity loaded during the sitemap generation.
+    $this->memoryCache->deleteAll();
   }
 
   /**
diff --git a/xmlsitemap.services.yml b/xmlsitemap.services.yml
index d9e9b9e..56daeab 100644
--- a/xmlsitemap.services.yml
+++ b/xmlsitemap.services.yml
@@ -1,7 +1,7 @@
 services:
   xmlsitemap_generator:
     class: Drupal\xmlsitemap\XmlSitemapGenerator
-    arguments: ['@config.factory', '@state', '@language_manager', '@logger.channel.xmlsitemap', '@module_handler', '@entity_type.manager', '@database', '@messenger', '@file_system', '@datetime.time']
+    arguments: ['@config.factory', '@state', '@language_manager', '@logger.channel.xmlsitemap', '@module_handler', '@entity_type.manager', '@database', '@messenger', '@file_system', '@datetime.time', '@entity.memory_cache']
     tags:
       - { name: xmlsitemap_generator }
   xmlsitemap.link_storage: