diff --git a/inc/checkout.php b/inc/checkout.php
index 309bba5..e8c2bfe 100644
--- a/inc/checkout.php
+++ b/inc/checkout.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Checkout policy terms: customize the terms checkbox and validate consent.
+ * Checkout policy terms: require the consent and link the policy.
  *
  * @package libresign
  */
@@ -8,25 +8,28 @@
 defined( 'ABSPATH' ) || exit;
 
 /**
- * Customize the checkout terms checkbox text to point at the policy page.
+ * Require the policy consent on the checkout.
  */
-function libresign_theme_checkout_policy_checkbox_text( $text ) {
-	$policy_url = libresign_theme_get_policy_url();
+function libresign_theme_register_policy_consent_field() {
+	if ( ! function_exists( 'woocommerce_register_additional_checkout_field' ) ) {
+		return;
+	}
 
-	return sprintf(
-		/* translators: %s: policy page link */
-		__( 'I agree to the %s before placing the order.', 'libresign' ),
-		sprintf(
-			'<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>',
-			esc_url( $policy_url ),
-			esc_html__( 'terms and privacy policy', 'libresign' )
+	woocommerce_register_additional_checkout_field(
+		array(
+			'id'            => 'libresign/policy-consent',
+			'label'         => __( 'I agree to the terms and privacy policy before placing the order.', 'libresign' ),
+			'location'      => 'order',
+			'type'          => 'checkbox',
+			'required'      => true,
+			'error_message' => __( 'You must agree to the policies before completing the purchase.', 'libresign' ),
 		)
 	);
 }
-add_filter( 'woocommerce_get_terms_and_conditions_checkbox_text', 'libresign_theme_checkout_policy_checkbox_text' );
+add_action( 'woocommerce_init', 'libresign_theme_register_policy_consent_field' );
 
 /**
- * Prevent checkout submission without policy terms acceptance.
+ * Refuse an order placed through the classic checkout without the policy consent.
  */
 function libresign_theme_validate_checkout_policy_consent( $data, $errors ) {
 	if ( empty( $data['terms'] ) ) {
@@ -37,3 +40,26 @@ function libresign_theme_validate_checkout_policy_consent( $data, $errors ) {
 	}
 }
 add_action( 'woocommerce_after_checkout_validation', 'libresign_theme_validate_checkout_policy_consent', 10, 2 );
+
+/**
+ * Link the checkout terms text to the policy.
+ */
+function libresign_theme_link_checkout_terms_to_policy( $block_content ) {
+	$text = sprintf(
+		/* translators: %s: policy page link */
+		__( 'Read the %s.', 'libresign' ),
+		sprintf(
+			'<a href="%s" target="_blank" rel="noopener noreferrer">%s</a>',
+			esc_url( libresign_theme_get_policy_url() ),
+			esc_html__( 'terms and privacy policy', 'libresign' )
+		)
+	);
+
+	return (string) preg_replace(
+		'/<div(?=[^>]*\bwp-block-woocommerce-checkout-terms-block\b)/',
+		'<div data-text="' . esc_attr( $text ) . '"',
+		(string) $block_content,
+		1
+	);
+}
+add_filter( 'render_block_woocommerce/checkout-terms-block', 'libresign_theme_link_checkout_terms_to_policy' );
diff --git a/tests/Integration/Inc/CheckoutTest.php b/tests/Integration/Inc/CheckoutTest.php
index a306fe7..e09e1f1 100644
--- a/tests/Integration/Inc/CheckoutTest.php
+++ b/tests/Integration/Inc/CheckoutTest.php
@@ -2,34 +2,59 @@
 
 namespace LibreSign\WordPressTheme\Tests\Integration\Inc;
 
+use Automattic\WooCommerce\Blocks\Domain\Services\CheckoutFields;
+use Automattic\WooCommerce\Blocks\Package;
 use WP_Error;
 use WP_UnitTestCase;
 
 final class CheckoutTest extends WP_UnitTestCase {
 
-	private function checkout_errors( $data ) {
-		$errors = new WP_Error();
-		do_action( 'woocommerce_after_checkout_validation', $data, $errors );
+	public function test_requires_the_policy_consent_to_place_an_order() {
+		__internal_woocommerce_blocks_deregister_checkout_field( 'libresign/policy-consent' );
 
-		return $errors;
-	}
+		libresign_theme_register_policy_consent_field();
 
-	public function test_the_terms_checkbox_links_to_the_policy_in_a_new_tab() {
-		$this->assertSame(
-			'I agree to the <a href="https://libresign.coop/privacy-policy" target="_blank" rel="noopener noreferrer">terms and privacy policy</a> before placing the order.',
-			apply_filters( 'woocommerce_get_terms_and_conditions_checkbox_text', '' )
-		);
+		$field = Package::container()->get( CheckoutFields::class )->get_additional_fields()['libresign/policy-consent'];
+
+		$this->assertSame( 'checkbox', $field['type'] );
+		$this->assertSame( 'order', $field['location'] );
+		$this->assertTrue( $field['required'] );
+		$this->assertSame( 'I agree to the terms and privacy policy before placing the order.', $field['label'] );
+		$this->assertSame( 'You must agree to the policies before completing the purchase.', $field['errorMessage'] );
 	}
 
-	public function test_refuses_an_order_without_the_policy_consent() {
-		$errors = $this->checkout_errors( array( 'terms' => 0 ) );
+	public function test_the_classic_checkout_refuses_an_order_without_the_consent() {
+		$errors = new WP_Error();
+
+		do_action( 'woocommerce_after_checkout_validation', array( 'terms' => 0 ), $errors );
 
 		$this->assertContains( 'libresign_policy_consent', $errors->get_error_codes() );
 	}
 
-	public function test_accepts_an_order_with_the_policy_consent() {
-		$errors = $this->checkout_errors( array( 'terms' => 1 ) );
+	public function test_the_classic_checkout_accepts_an_order_with_the_consent() {
+		$errors = new WP_Error();
+
+		do_action( 'woocommerce_after_checkout_validation', array( 'terms' => 1 ), $errors );
 
 		$this->assertNotContains( 'libresign_policy_consent', $errors->get_error_codes() );
 	}
+
+	/**
+	 * @dataProvider provide_terms_blocks
+	 */
+	public function test_links_the_checkout_terms_to_the_policy( $block_content ) {
+		$this->assertSame(
+			'<div data-text="Read the &lt;a href=&quot;https://libresign.coop/privacy-policy&quot; target=&quot;_blank&quot; rel=&quot;noopener noreferrer&quot;&gt;terms and privacy policy&lt;/a&gt;."' . substr( $block_content, 4 ),
+			apply_filters( 'render_block_woocommerce/checkout-terms-block', $block_content )
+		);
+	}
+
+	public static function provide_terms_blocks() {
+		yield 'as saved'                  => array( '<div class="wp-block-woocommerce-checkout-terms-block"></div>' );
+		yield 'as woocommerce renders it' => array( '<div data-block-name="woocommerce/checkout-terms-block" class="wp-block-woocommerce-checkout-terms-block"></div>' );
+	}
+
+	public function test_leaves_other_markup_alone() {
+		$this->assertSame( '<div class="wp-block-group"></div>', libresign_theme_link_checkout_terms_to_policy( '<div class="wp-block-group"></div>' ) );
+	}
 }