diff --git a/core/includes/common.inc b/core/includes/common.inc
index 3852870..758a3b0 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -23,8 +23,6 @@
 use Drupal\Core\Routing\GeneratorNotInitializedException;
 use Drupal\Core\SystemListingInfo;
 use Drupal\Core\Template\Attribute;
-use Zend\Feed\Writer\Writer;
-use Zend\Feed\Reader\Reader;
 
 use Drupal\Core\Asset\CssCollectionRenderer;
 use Drupal\Core\Asset\CssCollectionOptimizer;
@@ -3109,10 +3107,6 @@ function _drupal_bootstrap_code() {
   // Load all enabled modules
   Drupal::moduleHandler()->loadAll();
 
-  // Set our bridge extension manager to Zend Feed.
-  Reader::setExtensionManager(Drupal::service('feed.bridge.reader'));
-  Writer::setExtensionManager(Drupal::service('feed.bridge.writer'));
-
   // Make sure all stream wrappers are registered.
   file_get_stream_wrappers();
 
diff --git a/core/modules/aggregator/lib/Drupal/aggregator/Plugin/aggregator/parser/DefaultParser.php b/core/modules/aggregator/lib/Drupal/aggregator/Plugin/aggregator/parser/DefaultParser.php
index a295749..b21b9f5 100644
--- a/core/modules/aggregator/lib/Drupal/aggregator/Plugin/aggregator/parser/DefaultParser.php
+++ b/core/modules/aggregator/lib/Drupal/aggregator/Plugin/aggregator/parser/DefaultParser.php
@@ -32,6 +32,8 @@ class DefaultParser implements ParserInterface {
    * {@inheritdoc}
    */
   public function parse(Feed $feed) {
+    // Set our bridge extension manager to Zend Feed.
+    Reader::setExtensionManager(\Drupal::service('feed.bridge.reader'));
     try {
       $channel = Reader::importString($feed->source_string);
     }