diff --git a/src/wp-admin/credits.php b/src/wp-admin/credits.php
index 7052357b8b..35a906e891 100644
--- a/src/wp-admin/credits.php
+++ b/src/wp-admin/credits.php
@@ -20,12 +20,12 @@ function wp_credits() {
 	if ( ! is_array( $results )
 		|| ( isset( $results['data']['version'] ) && strpos( $wp_version, $results['data']['version'] ) !== 0 )
 	) {
-		$response = wp_remote_get( "http://api.wordpress.org/core/credits/1.0/?version=$wp_version&locale=$locale" );
+		$response = wp_remote_get( "http://api.wordpress.org/core/credits/1.1/?version=$wp_version&locale=$locale" );
 
 		if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) )
 			return false;
 
-		$results = maybe_unserialize( wp_remote_retrieve_body( $response ) );
+		$results = json_decode( wp_remote_retrieve_body( $response ), true );
 
 		if ( ! is_array( $results ) )
 			return false;
diff --git a/src/wp-admin/includes/dashboard.php b/src/wp-admin/includes/dashboard.php
index 414f38f0cd..eda2f49354 100644
--- a/src/wp-admin/includes/dashboard.php
+++ b/src/wp-admin/includes/dashboard.php
@@ -1226,7 +1226,7 @@ function wp_check_browser_version() {
 			'user-agent'	=> 'WordPress/' . $wp_version . '; ' . home_url()
 		);
 
-		$response = wp_remote_post( 'http://api.wordpress.org/core/browse-happy/1.0/', $options );
+		$response = wp_remote_post( 'http://api.wordpress.org/core/browse-happy/1.1/', $options );
 
 		if ( is_wp_error( $response ) || 200 != wp_remote_retrieve_response_code( $response ) )
 			return false;
@@ -1242,7 +1242,7 @@ function wp_check_browser_version() {
 		 *  'img_src' - string - An image representing the browser
 		 *  'img_src_ssl' - string - An image (over SSL) representing the browser
 		 */
-		$response = maybe_unserialize( wp_remote_retrieve_body( $response ) );
+		$response = json_decode( wp_remote_retrieve_body( $response ), true );
 
 		if ( ! is_array( $response ) )
 			return false;
diff --git a/src/wp-admin/includes/import.php b/src/wp-admin/includes/import.php
index 69f7ebe6a3..590a54f527 100644
--- a/src/wp-admin/includes/import.php
+++ b/src/wp-admin/includes/import.php
@@ -108,10 +108,10 @@ function wp_get_popular_importers() {
 	$popular_importers = get_site_transient( 'popular_importers_' . $locale );
 
 	if ( ! $popular_importers ) {
-		$url = add_query_arg( 'locale', get_locale(), 'http://api.wordpress.org/core/importers/1.0/' );
+		$url = add_query_arg( 'locale', get_locale(), 'http://api.wordpress.org/core/importers/1.1/' );
 		$options = array( 'user-agent' => 'WordPress/' . $wp_version . '; ' . home_url() );
 		$response = wp_remote_get( $url, $options );
-		$popular_importers = maybe_unserialize( wp_remote_retrieve_body( $response ) );
+		$popular_importers = json_decode( wp_remote_retrieve_body( $response ), true );
 
 		if ( is_array( $popular_importers ) )
 			set_site_transient( 'popular_importers_' . $locale, $popular_importers, 2 * DAY_IN_SECONDS );