diff --git a/d3mapbuilder.py b/d3mapbuilder.py
index 35678fd..8ffcf9e 100644
--- a/d3mapbuilder.py
+++ b/d3mapbuilder.py
@@ -1,4 +1,5 @@
 import json
+import datetime
 
 class D3MapBuilder:
   def __init__(self, db):
@@ -23,5 +24,9 @@ class D3MapBuilder:
                         'id': x.id
                        } for x in links]
 
+    output['meta'] = {
+                      'timestamp': datetime.datetime.utcnow().isoformat()
+                     }
+
     return json.dumps(output)