diff --git a/lib/index.d.ts b/lib/index.d.ts
index 3857f2d..0b29375 100644
--- a/lib/index.d.ts
+++ b/lib/index.d.ts
@@ -22,7 +22,7 @@ export type KeyEntry = {
   certType: 'X.509';
   alias: string;
   date: Date;
-  chain: Buffer[];
+  chain: Certificate[];
   protectedPrivateKey: Buffer;
 }