diff --git a/phpseclib/File/X509.php b/phpseclib/File/X509.php
index 714e9b93..1a180253 100644
--- a/phpseclib/File/X509.php
+++ b/phpseclib/File/X509.php
@@ -1958,6 +1958,9 @@ class File_X509
             // "Certificate Transparency"
             // https://tools.ietf.org/html/rfc6962
             case '1.3.6.1.4.1.11129.2.4.2':
+            // "Qualified Certificate statements"
+            // https://tools.ietf.org/html/rfc3739#section-3.2.6
+            case '1.3.6.1.5.5.7.1.3':
                 return true;
 
             // CSR attributes