diff --git a/wp-admin/includes/file.php b/wp-admin/includes/file.php
index 4950d265c7..7f95c72282 100644
--- a/wp-admin/includes/file.php
+++ b/wp-admin/includes/file.php
@@ -2664,7 +2664,7 @@ function request_filesystem_credentials( $form_post, $type = '', $error = false,
 	<p class="request-filesystem-credentials-action-buttons">
 		<?php wp_nonce_field( 'filesystem-credentials', '_fs_nonce', false, true ); ?>
 		<button class="button cancel-button" data-js-action="close" type="button"><?php _e( 'Cancel' ); ?></button>
-		<?php submit_button( __( 'Proceed' ), '', 'upgrade', false ); ?>
+		<?php submit_button( __( 'Proceed' ), 'primary', 'upgrade', false ); ?>
 	</p>
 </div>
 </form>
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7cfdf0a6d0..52179fc6ed 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58148';
+$wp_version = '6.6-alpha-58149';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.