diff --git a/pydruid/client.py b/pydruid/client.py
index ae51eab7..99aaf830 100755
--- a/pydruid/client.py
+++ b/pydruid/client.py
@@ -16,6 +16,8 @@
 import json
 import re
 import urllib
+import urllib.error
+import urllib.request
 from base64 import b64encode
 
 from pydruid.query import QueryBuilder
diff --git a/pydruid/utils/aggregators.py b/pydruid/utils/aggregators.py
index 23caa826..697b8fb5 100644
--- a/pydruid/utils/aggregators.py
+++ b/pydruid/utils/aggregators.py
@@ -62,6 +62,11 @@ def doublemin(raw_metric):
 def doublemax(raw_metric):
     return {"type": "doubleMax", "fieldName": raw_metric}
 
+def doublelast(raw_metric):
+    return {"type": "doubleLast", "fieldName": raw_metric}
+
+def doublefirst(raw_metric):
+    return {"type": "doubleFirst", "fieldName": raw_metric}
 
 def count(raw_metric):
     return {"type": "count", "fieldName": raw_metric}