diff --git a/src/lib/chessboard-element.ts b/src/lib/chessboard-element.ts
index e5c7f81..d83262f 100644
--- a/src/lib/chessboard-element.ts
+++ b/src/lib/chessboard-element.ts
@@ -495,6 +495,7 @@ export class ChessBoardElement extends LitElement {
         )}
       </div>
       <div
+        part="dragged-pieces"
         id="dragged-pieces"
         style=${styleMap({
           width: `${this._squareSize}px`,