diff --git a/src/CustomizerSection.php b/src/CustomizerSection.php
index 1cc11a7..fe50027 100644
--- a/src/CustomizerSection.php
+++ b/src/CustomizerSection.php
@@ -8,7 +8,7 @@
  */
 class CustomizerSection
 {
-    private string $slug = '';
+    protected string $slug = '';
 
     private string $label = '';