diff --git a/package.json b/package.json
index e550b0b..073fb9e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "author": "Transcend Inc.",
   "name": "@transcend-io/airgap.js-types",
   "description": "TypeScript types for airgap.js interoperability with custom consent UIs",
-  "version": "10.5.2",
+  "version": "10.5.3",
   "homepage": "https://github.com/transcend-io/airgap.js-types",
   "repository": {
     "type": "git",
diff --git a/src/core.ts b/src/core.ts
index f19854f..4796dcb 100644
--- a/src/core.ts
+++ b/src/core.ts
@@ -435,6 +435,7 @@ export const ConsentTokenPayload = t.intersection([
   }),
   t.partial({
     deprecatedEncryptedIdentifiers: t.array(t.string),
+    iat: t.string,
   }),
 ]);