diff --git a/xmlsitemap.install b/xmlsitemap.install
index cf18d71..433f6f6 100644
--- a/xmlsitemap.install
+++ b/xmlsitemap.install
@@ -201,7 +201,7 @@ function xmlsitemap_schema() {
       'loc' => [
         'description' => 'The URL to the item relative to the Drupal path.',
         'type' => 'varchar',
-        'length' => 255,
+        'length' => 511,
         'not null' => TRUE,
         'default' => '',
       ],
@@ -370,3 +370,18 @@ function xmlsitemap_update_8002() {
     ->condition('type', 'frontpage')
     ->execute();
 }
+
+
+/**
+ * Increase loc column length to 511.
+ */
+function xmlsitemap_update_8003() {
+  $db_schema = Database::getConnection()->schema();
+  $db_schema->changeField('xmlsitemap', 'loc', 'loc', [
+    'description' => 'The URL to the item relative to the Drupal path.',
+    'type' => 'varchar',
+    'length' => 511,
+    'not null' => TRUE,
+    'default' => '',
+  ]);
+}
\ No newline at end of file