diff --git a/wp-includes/class-oembed.php b/wp-includes/class-oembed.php
index 616a844186..467b5e5968 100644
--- a/wp-includes/class-oembed.php
+++ b/wp-includes/class-oembed.php
@@ -490,11 +490,13 @@ class WP_oEmbed {
 		$provider = add_query_arg( 'maxwidth', (int) $args['width'], $provider );
 		$provider = add_query_arg( 'maxheight', (int) $args['height'], $provider );
 		$provider = add_query_arg( 'url', urlencode($url), $provider );
+		$provider = add_query_arg( 'dnt', 1, $provider );
 
 		/**
 		 * Filters the oEmbed URL to be fetched.
 		 *
 		 * @since 2.9.0
+		 * @since 4.9.0 The `dnt` (Do Not Track) query parameter was added to all oEmbed provider URLs.
 		 *
 		 * @param string $provider URL of the oEmbed provider.
 		 * @param string $url      URL of the content to be embedded.
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7201561e3c..d509d35c6a 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-41344';
+$wp_version = '4.9-alpha-41345';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.