diff --git a/types/bitcoinjs-lib/index.d.ts b/types/bitcoinjs-lib/index.d.ts
index 920df43d6e..1e8255e7ef 100644
--- a/types/bitcoinjs-lib/index.d.ts
+++ b/types/bitcoinjs-lib/index.d.ts
@@ -23,6 +23,7 @@ export interface In {
     hash: Buffer;
     index: number;
     sequence: number;
+    witness: Buffer[];
 }
 
 export interface Network {