diff --git a/predix/data/timeseries.py b/predix/data/timeseries.py
index 440fb48..4675cd5 100644
--- a/predix/data/timeseries.py
+++ b/predix/data/timeseries.py
@@ -312,11 +312,7 @@ def get_datapoints(self, tags, start=None, end=None, order=None,
                 if not isinstance(aggregations, list):
                     aggregations = [aggregations]
 
-                query['aggregations'] = []
-                for aggregation in aggregations:
-                    query['aggregations'].append({
-                        'sampling': {'datapoints': 1},
-                        'type': aggregation })
+                query['aggregations'] = aggregations
 
             params['tags'].append(query)
 
diff --git a/setup.py b/setup.py
index d662a15..546a224 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 from setuptools import setup, find_packages
 
 install_requires = [
-        "python-dateutil==2.6.0",
+        "python-dateutil>=2.6.0",
         "boto3",
         "PyYAML",
         "requests",
@@ -12,7 +12,6 @@
         "six",
         "future",
         "psycopg2",
-        "websocket",
         "websocket-client"
     ]