diff --git a/wp-admin/includes/schema.php b/wp-admin/includes/schema.php
index 011895f06c..6c15a4d99f 100644
--- a/wp-admin/includes/schema.php
+++ b/wp-admin/includes/schema.php
@@ -446,7 +446,7 @@ function populate_options( array $options = array() ) {
 		'moderation_keys'                 => '',
 		'active_plugins'                  => array(),
 		'category_base'                   => '',
-		'ping_sites'                      => 'http://rpc.pingomatic.com/',
+		'ping_sites'                      => 'https://rpc.pingomatic.com/',
 		'comment_max_links'               => 2,
 		'gmt_offset'                      => $gmt_offset,
 
diff --git a/wp-admin/includes/upgrade.php b/wp-admin/includes/upgrade.php
index 138d5d9bbb..684f1c92a3 100644
--- a/wp-admin/includes/upgrade.php
+++ b/wp-admin/includes/upgrade.php
@@ -881,6 +881,11 @@ function upgrade_all() {
 	if ( $wp_current_db_version < 58975 ) {
 		upgrade_670();
 	}
+
+	if ( $wp_current_db_version < 60421 ) {
+		upgrade_682();
+	}
+
 	maybe_disable_link_manager();
 
 	maybe_disable_automattic_widgets();
@@ -2439,6 +2444,42 @@ function upgrade_670() {
 		wp_set_options_autoload( $options, false );
 	}
 }
+
+/**
+ * Executes changes made in WordPress 6.8.2.
+ *
+ * @ignore
+ * @since 6.8.2
+ *
+ * @global int $wp_current_db_version The old (current) database version.
+ */
+function upgrade_682() {
+	global $wp_current_db_version;
+
+	if ( $wp_current_db_version < 60421 ) {
+		// Upgrade Ping-O-Matic and Twingly to use HTTPS.
+		$ping_sites_value = get_option( 'ping_sites' );
+		$ping_sites_value = explode( "\n", $ping_sites_value );
+		$ping_sites_value = array_map(
+			function ( $url ) {
+				$url = trim( $url );
+				$url = sanitize_url( $url );
+				if (
+					str_ends_with( trailingslashit( $url ), '://rpc.pingomatic.com/' )
+					|| str_ends_with( trailingslashit( $url ), '://rpc.twingly.com/' )
+				) {
+					$url = set_url_scheme( $url, 'https' );
+				}
+				return $url;
+			},
+			$ping_sites_value
+		);
+		$ping_sites_value = array_filter( $ping_sites_value );
+		$ping_sites_value = implode( "\n", $ping_sites_value );
+		update_option( 'ping_sites', $ping_sites_value );
+	}
+}
+
 /**
  * Executes network-level upgrade routines.
  *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9d5b4ba7d8..33b5dcf09f 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,14 +16,14 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.8.2-alpha-60427';
+$wp_version = '6.8.2-alpha-60428';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
  *
  * @global int $wp_db_version
  */
-$wp_db_version = 58975;
+$wp_db_version = 60421;
 
 /**
  * Holds the TinyMCE version.