diff --git a/iam_builder/schemas/iam_schema.json b/iam_builder/schemas/iam_schema.json
index b6324f1..f87a261 100644
--- a/iam_builder/schemas/iam_schema.json
+++ b/iam_builder/schemas/iam_schema.json
@@ -73,6 +73,10 @@
                     }
                 }
             }
+        },
+        "role_duration_seconds":{
+            "description": "Max duration role can be assumed for in seconds",
+            "type": "integer"
         }
     }
 }
\ No newline at end of file