diff --git a/lib/load.php b/lib/load.php
index 340a900130405..ef55c547525ae 100644
--- a/lib/load.php
+++ b/lib/load.php
@@ -142,6 +142,21 @@ function gutenberg_is_experiment_enabled( $name ) {
 		require __DIR__ . '/experimental/fonts/class-wp-font-face.php';
 		require __DIR__ . '/experimental/fonts/class-wp-font-face-resolver.php';
 		require __DIR__ . '/experimental/fonts/fonts.php';
+
+		// Load the BC Layer. Do no backport to WP Core.
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-fonts-provider.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-fonts-utils.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-fonts.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-fonts-provider-local.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-fonts-resolver.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/fonts-api.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-gutenberg-fonts-api-bc-layer.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/webfonts-deprecations.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-webfonts-utils.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-webfonts-provider.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-webfonts-provider-local.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-webfonts.php';
+		require __DIR__ . '/experimental/fonts/bc-layer/class-wp-web-fonts.php';
 	}
 } elseif ( ! class_exists( 'WP_Fonts' ) ) {
 	// Fonts API files.