diff --git a/js/soundswallower.d.ts b/js/soundswallower.d.ts
index 54ac709..ebb15d6 100644
--- a/js/soundswallower.d.ts
+++ b/js/soundswallower.d.ts
@@ -44,6 +44,7 @@ export interface Segment {
   t: string;
   b: number;
   d: number;
+  p: number;
   w?: Array<Segment>;
 }
 export interface Config {