diff --git a/rollbar-api/src/main/java/com/rollbar/api/payload/data/Data.java b/rollbar-api/src/main/java/com/rollbar/api/payload/data/Data.java
index 64570f82..530999d0 100755
--- a/rollbar-api/src/main/java/com/rollbar/api/payload/data/Data.java
+++ b/rollbar-api/src/main/java/com/rollbar/api/payload/data/Data.java
@@ -309,6 +309,8 @@ public Map<String, Object> asJson() {
       values.put("notifier", notifier);
     }
 
+    values.put("is_uncaught", isUncaught);
+
     return values;
   }