diff --git a/core/Composition.js b/core/Composition.js
index c7033ffc..5e5024a3 100644
--- a/core/Composition.js
+++ b/core/Composition.js
@@ -601,8 +601,8 @@ export default class Composition {
     }
 
     if (isShadowRoot) {
-      customElements.upgrade(instanceFragment);
       target.append(instanceFragment);
+      customElements.upgrade(instanceFragment);
     }
 
     draw.target = target;