diff -u b/core/modules/help_topics/src/HelpTopicPluginBase.php b/core/modules/help_topics/src/HelpTopicPluginBase.php
--- b/core/modules/help_topics/src/HelpTopicPluginBase.php
+++ b/core/modules/help_topics/src/HelpTopicPluginBase.php
@@ -2,12 +2,9 @@
 
 namespace Drupal\help_topics;
 
-use Drupal\Core\Cache\Cache;
 use Drupal\Core\Link;
-use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
 use Drupal\Core\Plugin\PluginBase;
 use Drupal\Core\Url;
-use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Base class for help topic plugins.
@@ -17,43 +14,7 @@
  *   experimental modules and development releases of contributed modules.
  *   See https://www.drupal.org/core/experimental for more information.
  */
-abstract class HelpTopicPluginBase extends PluginBase implements HelpTopicPluginInterface, ContainerFactoryPluginInterface {
-
-  /**
-   * The help topic plugin manager.
-   *
-   * @var \Drupal\help_topics\HelpTopicPluginManagerInterface
-   */
-  protected $pluginManager;
-
-  /**
-   * HelpTopicPluginBase constructor.
-   *
-   * @param array $configuration
-   *   A configuration array containing information about the plugin instance.
-   * @param string $plugin_id
-   *   The plugin_id for the plugin instance.
-   * @param mixed $plugin_definition
-   *   The plugin implementation definition.
-   * @param \Drupal\help_topics\HelpTopicPluginManagerInterface $plugin_manager
-   *   The help topic plugin manager.
-   */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, HelpTopicPluginManagerInterface $plugin_manager) {
-    parent::__construct($configuration, $plugin_id, $plugin_definition);
-    $this->pluginManager = $plugin_manager;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
-    return new static(
-      $configuration,
-      $plugin_id,
-      $plugin_definition,
-      $container->get('plugin.manager.help_topic')
-    );
-  }
+abstract class HelpTopicPluginBase extends PluginBase implements HelpTopicPluginInterface {
 
   /**
    * The name of the module or theme providing the help topic.
@@ -86,52 +47,6 @@
   /**
    * {@inheritdoc}
    */
-  public function getCacheMaxAge() {
-    return Cache::PERMANENT;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getCacheContexts() {
-    return [];
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getCacheTags() {
-    $tags = [];
-    if ($this->pluginDefinition['cache_tag']) {
-      $tags[] = $this->pluginDefinition['cache_tag'];
-    }
-
-    foreach ($this->pluginDefinition['related'] as $topic) {
-      $tag = $this->pluginManager->getDefinition($topic)['cache_tag'];
-      if ($tag) {
-        $tags[] = $tag;
-      }
-    }
-    return array_unique($tags);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
-  public function getCacheTagsForList() {
-    $tags = [];
-    // By default, there are no list cache tags, but we do want the cache
-    // tags for this plugin.
-    if ($this->pluginDefinition['cache_tag']) {
-      $tags[] = $this->pluginDefinition['cache_tag'];
-    }
-
-    return $tags;
-  }
-
-  /**
-   * {@inheritdoc}
-   */
   public function toUrl(array $options = []) {
     return Url::fromRoute('help_topics.help_topic', ['id' => $this->getPluginId()], $options);
   }
diff -u b/core/modules/help_topics/src/HelpTopicPluginInterface.php b/core/modules/help_topics/src/HelpTopicPluginInterface.php
--- b/core/modules/help_topics/src/HelpTopicPluginInterface.php
+++ b/core/modules/help_topics/src/HelpTopicPluginInterface.php
@@ -82,10 +82,2 @@
 
-  /**
-   * Returns the cache tags appropriate for listings of plugins of this type.
-   *
-   * @return string[]
-   *   Array of cache tags.
-   */
-  public function getCacheTagsForList();
-
 }
diff -u b/core/modules/help_topics/src/HelpTopicPluginManager.php b/core/modules/help_topics/src/HelpTopicPluginManager.php
--- b/core/modules/help_topics/src/HelpTopicPluginManager.php
+++ b/core/modules/help_topics/src/HelpTopicPluginManager.php
@@ -58,7 +58,6 @@
     'related' => [],
     // The class used to instantiate the plugin.
     'class' => '',
-    'cache_tag' => '',
   ];
 
   /**
diff -u b/core/modules/help_topics/src/HelpTopicTwig.php b/core/modules/help_topics/src/HelpTopicTwig.php
--- b/core/modules/help_topics/src/HelpTopicTwig.php
+++ b/core/modules/help_topics/src/HelpTopicTwig.php
@@ -2,6 +2,8 @@
 
 namespace Drupal\help_topics;
 
+use Drupal\Core\Cache\UnchangingCacheableDependencyTrait;
+use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
 use Drupal\Core\Template\TwigEnvironment;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
@@ -16,7 +18,8 @@
  *   experimental modules and development releases of contributed modules.
  *   See https://www.drupal.org/core/experimental for more information.
  */
-class HelpTopicTwig extends HelpTopicPluginBase {
+class HelpTopicTwig extends HelpTopicPluginBase implements ContainerFactoryPluginInterface {
+  use UnchangingCacheableDependencyTrait;
 
   /**
    * The Twig environment.
@@ -34,13 +37,11 @@
    *   The plugin_id for the plugin instance.
    * @param mixed $plugin_definition
    *   The plugin implementation definition.
-   * @param \Drupal\help_topics\HelpTopicPluginManagerInterface $plugin_manager
-   *   The help topic plugin manager.
    * @param \Drupal\Core\Template\TwigEnvironment $twig
    *   The Twig environment.
    */
-  public function __construct(array $configuration, $plugin_id, $plugin_definition, HelpTopicPluginManagerInterface $plugin_manager, TwigEnvironment $twig) {
-    parent::__construct($configuration, $plugin_id, $plugin_definition, $plugin_manager);
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, TwigEnvironment $twig) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition);
     $this->twig = $twig;
   }
 
@@ -52,7 +53,6 @@
       $configuration,
       $plugin_id,
       $plugin_definition,
-      $container->get('plugin.manager.help_topic'),
       $container->get('twig')
     );
   }
diff -u b/core/modules/help_topics/src/Plugin/HelpSection/HelpTopicSection.php b/core/modules/help_topics/src/Plugin/HelpSection/HelpTopicSection.php
--- b/core/modules/help_topics/src/Plugin/HelpSection/HelpTopicSection.php
+++ b/core/modules/help_topics/src/Plugin/HelpSection/HelpTopicSection.php
@@ -2,6 +2,7 @@
 
 namespace Drupal\help_topics\Plugin\HelpSection;
 
+use Drupal\Core\Cache\CacheableMetadata;
 use Drupal\help_topics\HelpTopicPluginInterface;
 use Drupal\help_topics\HelpTopicPluginManagerInterface;
 use Drupal\Core\Plugin\ContainerFactoryPluginInterface;
@@ -33,18 +34,16 @@
   protected $pluginManager;
 
   /**
-   * The render array for the list of topics.
+   * The top level help topic plugins.
    *
-   * @var array
+   * @var \Drupal\help_topics\HelpTopicPluginInterface[]
    */
-  protected $topicList;
+  protected $topLevelPlugins;
 
   /**
-   * The cache tags for the list of topics.
-   *
-   * @var string[]
+   * The merged top level help topic plugins cache metadata.
    */
-  protected $cacheTagList;
+  protected $cacheableMetadata;
 
   /**
    * Constructs a HelpTopicSection object.
@@ -79,56 +78,77 @@
    * {@inheritdoc}
    */
   public function getCacheTags() {
-    if (!isset($this->topicList)) {
-      $this->setProperties();
-    }
-
-    return $this->cacheTagList;
+    return $this->getCacheMetadata()->getCacheTags();
   }
 
   /**
    * {@inheritdoc}
    */
-  public function listTopics() {
-    if (!isset($this->topicList)) {
-      $this->setProperties();
-    }
+  public function getCacheContexts() {
+    return $this->getCacheMetadata()->getCacheContexts();
+  }
 
-    return $this->topicList;
+  /**
+   * {@inheritdoc}
+   */
+  public function getCacheMaxAge() {
+    return $this->getCacheMetadata()->getCacheMaxAge();
   }
 
   /**
-   * Sets the topic list and cache tags properties.
+   * {@inheritdoc}
    */
-  protected function setProperties() {
-    $definitions = $this->pluginManager->getDefinitions();
+  public function listTopics() {
+    // Map the top level help topic plugins to a list of topic links.
+    return array_map(function (HelpTopicPluginInterface $topic) {
+      return $topic->toLink();
+    }, $this->getPlugins());
+  }
 
-    // Get all the top level topics and merge their list cache tags.
-    $top_level_topics = [];
-    $this->cacheTagList = [];
-    foreach ($definitions as $definition) {
-      if ($definition['top_level']) {
-        $plugin = $this->pluginManager->createInstance($definition['id']);
-        $top_level_topics[$plugin->getPluginId()] = $plugin;
-        $this->cacheTagList = array_merge($this->cacheTagList, $plugin->getCacheTagsForList());
+  /**
+   * Gets the top level help topic plugins.
+   *
+   * @return \Drupal\help_topics\HelpTopicPluginInterface[]
+   *   The top level help topic plugins
+   */
+  protected function getPlugins() {
+    if (!isset($this->topLevelPlugins)) {
+      $definitions = $this->pluginManager->getDefinitions();
+
+      // Get all the top level topics and merge their list cache tags.
+      foreach ($definitions as $definition) {
+        if ($definition['top_level']) {
+          $this->topLevelPlugins[$definition['id']] = $this->pluginManager->createInstance($definition['id']);
+        }
       }
+
+      // Sort the top level topics by label and if they match by plugin ID.
+      usort($this->topLevelPlugins, function (HelpTopicPluginInterface $a, HelpTopicPluginInterface $b) {
+        $a_label = (string) $a->getLabel();
+        $b_label = (string) $b->getLabel();
+        if ($a_label === $b_label) {
+          return $a->getPluginId() < $b->getPluginId() ? -1 : 1;
+        }
+        return $a_label < $b_label ? -1 : 1;
+      });
     }
-    $this->cacheTagList = array_unique($this->cacheTagList);
+    return $this->topLevelPlugins;
+  }
 
-    // Sort the top level topics by label and if they match by plugin ID.
-    usort($top_level_topics, function (HelpTopicPluginInterface $a, HelpTopicPluginInterface $b) {
-      $a_label = (string) $a->getLabel();
-      $b_label = (string) $b->getLabel();
-      if ($a_label === $b_label) {
-        return $a->getPluginId() < $b->getPluginId() ? -1 : 1;
+  /**
+   * Gets the merged CacheableMetadata for all the top level help topic plugins.
+   *
+   * @return \Drupal\Core\Cache\CacheableMetadata
+   *   The merged CacheableMetadata for all the top level help topic plugins.
+   */
+  protected function getCacheMetadata() {
+    if (!isset($this->cacheableMetadata)) {
+      $this->cacheableMetadata = new CacheableMetadata();
+      foreach ($this->getPlugins() as $plugin) {
+        $this->cacheableMetadata->addCacheableDependency($plugin);
       }
-      return $a_label < $b_label ? -1 : 1;
-    });
-
-    // Map the top level help topic plugins to a list of topic links.
-    $this->topicList = array_map(function (HelpTopicPluginInterface $topic) {
-      return $topic->toLink();
-    }, $top_level_topics);
+    }
+    return $this->cacheableMetadata;
   }
 
 }
diff -u b/core/modules/help_topics/tests/src/Functional/HelpTopicTest.php b/core/modules/help_topics/tests/src/Functional/HelpTopicTest.php
--- b/core/modules/help_topics/tests/src/Functional/HelpTopicTest.php
+++ b/core/modules/help_topics/tests/src/Functional/HelpTopicTest.php
@@ -186,7 +186,6 @@
    *   keys are the machine names of the topics. The values are arrays with the
    *   following elements:
    *   - name: Displayed name.
-   *   - cache_tags: Cache tags to verify are present on the topic display page.
    */
   protected function getTopicList() {
     return [