diff --git a/README.md b/README.md
index 34a9232..7633a3a 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@
     "Issuer": "test-issuer",
     "Audience": "test-audience",
     "Secret": "test-secret",
-    "Expiration": 3600
+    "Duration": 3600
   },
 ```