diff --git a/wp-includes/class-wp-feed-cache-transient.php b/wp-includes/class-wp-feed-cache-transient.php
index 734af641ca..2beeab69d2 100644
--- a/wp-includes/class-wp-feed-cache-transient.php
+++ b/wp-includes/class-wp-feed-cache-transient.php
@@ -12,6 +12,7 @@
  *
  * @since 2.8.0
  * @since 6.7.0 Now properly implements the SimplePie\Cache\Base interface.
+ * @since 6.9.0 Switched to Multisite's global cache via the `*_site_transient()` functions.
  */
 #[AllowDynamicProperties]
 class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
@@ -84,8 +85,8 @@ class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
 			$data = $data->data;
 		}
 
-		set_transient( $this->name, $data, $this->lifetime );
-		set_transient( $this->mod_name, time(), $this->lifetime );
+		set_site_transient( $this->name, $data, $this->lifetime );
+		set_site_transient( $this->mod_name, time(), $this->lifetime );
 		return true;
 	}
 
@@ -97,7 +98,7 @@ class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
 	 * @return array Data for `SimplePie::$data`.
 	 */
 	public function load() {
-		return get_transient( $this->name );
+		return get_site_transient( $this->name );
 	}
 
 	/**
@@ -108,7 +109,7 @@ class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
 	 * @return int Timestamp.
 	 */
 	public function mtime() {
-		return get_transient( $this->mod_name );
+		return get_site_transient( $this->mod_name );
 	}
 
 	/**
@@ -119,7 +120,7 @@ class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
 	 * @return bool False if value was not set and true if value was set.
 	 */
 	public function touch() {
-		return set_transient( $this->mod_name, time(), $this->lifetime );
+		return set_site_transient( $this->mod_name, time(), $this->lifetime );
 	}
 
 	/**
@@ -130,8 +131,8 @@ class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
 	 * @return true Always true.
 	 */
 	public function unlink() {
-		delete_transient( $this->name );
-		delete_transient( $this->mod_name );
+		delete_site_transient( $this->name );
+		delete_site_transient( $this->mod_name );
 		return true;
 	}
 }
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c74069b9e1..fdcf76e326 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.9-alpha-60523';
+$wp_version = '6.9-alpha-60524';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.