diff --git a/tagadelic.install b/tagadelic.install
index 6425cce..5700810 100644
--- a/tagadelic.install
+++ b/tagadelic.install
@@ -33,9 +33,31 @@ function tagadelic_update_1000() {
     update_variable_del('tagadelic_block_title_' . $machine_name);
     update_variable_del('tagadelic_block_tags_' . $machine_name);
   }
+
+  return t('Old Drupal 7 varaibles converted to Backdrop configuration.');
 }
 
 /**
  * @} End of "defgroup updates-7.x-to-1.x"
- * The next series of updates should start at 2000.
  */
+
+/**
+ * @defgroup updates-for-1.x Updates for Backdrop 1.x
+ * @{
+ * Update functions from Drupal 7.x to Backdrop CMS 1.x.
+ */
+
+/**
+ * Rebuild the theme registry.
+ */
+function tagadelic_update_1001() {
+  // Rebuild the theme registry for the new theme.inc file.
+  system_rebuild_theme_data();
+
+  return t('Theme registry rebuilt for Tagadelic module.');
+}
+
+/**
+ * @} End of "defgroup updates-for-1.x"
+ * The next series of updates should start at 2000.
+ */
\ No newline at end of file