diff --git a/includes/class-spacefast-plugin.php b/includes/class-spacefast-plugin.php
index 1dfffd3..c1d35a8 100644
--- a/includes/class-spacefast-plugin.php
+++ b/includes/class-spacefast-plugin.php
@@ -844,6 +844,7 @@ public static function register_simply_static(): void {
 		require_once dirname( __DIR__ ) . '/includes/class-spacefast-simply-static-task.php';
 		add_filter( 'simplystatic.archive_creation_job.task_list', array( __CLASS__, 'simply_static_tasks' ), 20, 2 );
 		add_filter( 'simply_static_class_name', array( __CLASS__, 'simply_static_task_class' ), 20, 2 );
+		add_filter( 'ss_additional_urls', array( __CLASS__, 'simply_static_archive_urls' ), 20 );
 		add_action( 'ss_archive_creation_job_after_start_queue', array( __CLASS__, 'static_export_started' ), 20 );
 	}
 
@@ -891,6 +892,41 @@ public static function simply_static_task_class( string $class_name, string $tas
 			: $class_name;
 	}
 
+	/**
+	 * Simply Static discovers custom post entries but not every custom post type
+	 * archive. Include those archive routes so navigation links cannot publish as
+	 * broken pages.
+	 *
+	 * @param array<int,string> $urls Additional source URLs.
+	 * @return array<int,string>
+	 */
+	public static function simply_static_archive_urls( array $urls ): array {
+		if ( Spacefast_Settings::MODE_STATIC !== Spacefast_Settings::mode() ) {
+			return $urls;
+		}
+		$options = get_option( 'simply-static', array() );
+		$options = is_array( $options ) ? $options : array();
+		$selected = isset( $options['post_types'] ) && is_array( $options['post_types'] )
+			? $options['post_types']
+			: array();
+		$configured = ! empty( $options['post_types_configured'] ) || array() !== $selected;
+		$post_types = get_post_types( array( 'public' => true ), 'objects' );
+		foreach ( $post_types as $name => $post_type ) {
+			if (
+				'attachment' === $name
+				|| empty( $post_type->has_archive )
+				|| ( $configured && ! in_array( $name, $selected, true ) )
+			) {
+				continue;
+			}
+			$archive_url = get_post_type_archive_link( $name );
+			if ( is_string( $archive_url ) && '' !== $archive_url ) {
+				$urls[] = $archive_url;
+			}
+		}
+		return array_values( array_unique( $urls ) );
+	}
+
 	public static function static_export_started( int $blog_id = 0 ): void {
 		unset( $blog_id );
 		if (
diff --git a/readme.txt b/readme.txt
index 587cd45..021bb43 100644
--- a/readme.txt
+++ b/readme.txt
@@ -3,7 +3,7 @@ Contributors: spacefast
 Tags: static site, headless cms, simply static, deployment
 Requires at least: 6.5
 Requires PHP: 8.1
-Stable tag: 0.5.6
+Stable tag: 0.5.7
 License: GPLv2 or later
 
 Publish a Simply Static export to Spacefast, or rebuild a headless site when WordPress content changes.
@@ -31,6 +31,9 @@ OAuth access is limited to the Team you authorize and the mode you choose. WordP
 
 == Changelog ==
 
+= 0.5.7 =
+* Include public custom post type archive routes in Simply Static exports.
+
 = 0.5.6 =
 * Make static WordPress exports publicly readable by default while preserving an explicit sf.jsonc access policy.
 
diff --git a/spacefast-wordpress.php b/spacefast-wordpress.php
index 7178ac2..0b65d4d 100644
--- a/spacefast-wordpress.php
+++ b/spacefast-wordpress.php
@@ -3,7 +3,7 @@
  * Plugin Name: Spacefast
  * Plugin URI: https://spacefast.com/
  * Description: Publishes static WordPress exports or rebuilds a headless Spacefast site.
- * Version: 0.5.6
+ * Version: 0.5.7
  * Update URI: https://github.com/spacefast/wordpress
  * Requires at least: 6.5
  * Requires PHP: 8.1
@@ -14,7 +14,7 @@
 
 defined( 'ABSPATH' ) || exit;
 
-define( 'SPACEFAST_WORDPRESS_VERSION', '0.5.6' );
+define( 'SPACEFAST_WORDPRESS_VERSION', '0.5.7' );
 define( 'SPACEFAST_WORDPRESS_FILE', __FILE__ );
 
 require_once __DIR__ . '/includes/class-spacefast-settings.php';
diff --git a/tests/acceptance/wordpress.php b/tests/acceptance/wordpress.php
index 90700e7..dc620bd 100644
--- a/tests/acceptance/wordpress.php
+++ b/tests/acceptance/wordpress.php
@@ -113,7 +113,7 @@ function spacefast_accept( bool $condition, string $message ): void {
 );
 
 $plugin = get_plugin_data( WP_PLUGIN_DIR . '/spacefast-wordpress/spacefast-wordpress.php', false, false );
-spacefast_accept( '0.5.6' === $plugin['Version'], 'Unexpected plugin version.' );
+spacefast_accept( '0.5.7' === $plugin['Version'], 'Unexpected plugin version.' );
 spacefast_accept( 'https://github.com/spacefast/wordpress' === $plugin['UpdateURI'], 'Update URI is missing.' );
 
 Spacefast_Settings::disconnect();
diff --git a/tests/behavior.php b/tests/behavior.php
index aea1326..8cd742c 100644
--- a/tests/behavior.php
+++ b/tests/behavior.php
@@ -116,6 +116,16 @@ function wp_json_encode( $value ): string {
 function get_post_type_object( string $post_type ) {
 	return $GLOBALS['spacefast_post_types'][ $post_type ] ?? null;
 }
+function get_post_types( array $args = array(), string $output = 'names' ): array {
+	$post_types = array_filter(
+		$GLOBALS['spacefast_post_types'],
+		static fn( object $post_type ): bool => ! isset( $args['public'] ) || $post_type->public === $args['public']
+	);
+	return 'objects' === $output ? $post_types : array_keys( $post_types );
+}
+function get_post_type_archive_link( string $post_type ) {
+	return $GLOBALS['spacefast_post_types'][ $post_type ]->archive_link ?? false;
+}
 function wp_generate_uuid4(): string {
 	return '00000000-0000-4000-8000-000000000001';
 }
@@ -839,6 +849,33 @@ static function ( string $url ) use ( &$invalid_receipt_requests ): array {
 	),
 	'publishes after export delivery and before cleanup'
 );
+$GLOBALS['spacefast_post_types']['case_study'] = (object) array(
+	'public' => true,
+	'has_archive' => 'case-studies',
+	'archive_link' => 'https://wp.example.test/case-studies/',
+);
+$GLOBALS['spacefast_post_types']['private_story'] = (object) array(
+	'public' => false,
+	'has_archive' => 'private-stories',
+	'archive_link' => 'https://wp.example.test/private-stories/',
+);
+check(
+	array( 'https://wp.example.test/manual/', 'https://wp.example.test/case-studies/' )
+		=== Spacefast_Plugin::simply_static_archive_urls(
+			array( 'https://wp.example.test/manual/', 'https://wp.example.test/case-studies/' )
+		),
+	'includes public custom post archives once in static exports'
+);
+$GLOBALS['spacefast_options']['simply-static'] = array(
+	'post_types' => array( 'post' ),
+	'post_types_configured' => true,
+);
+check(
+	array( 'https://wp.example.test/manual/' )
+		=== Spacefast_Plugin::simply_static_archive_urls( array( 'https://wp.example.test/manual/' ) ),
+	'respects the Simply Static post type selection for archives'
+);
+unset( $GLOBALS['spacefast_options']['simply-static'] );
 
 $archive = sys_get_temp_dir() . '/spacefast-wordpress-static-' . uniqid();
 mkdir( $archive );