diff --git a/worker/worker.py b/worker/worker.py
index a651c10..23accd8 100644
--- a/worker/worker.py
+++ b/worker/worker.py
@@ -17,7 +17,6 @@
 # to set TENANT_ID and URL to point to your StackTach web server.
 
 import datetime
-import json
 import kombu
 import kombu.entity
 import kombu.mixins
@@ -25,6 +24,14 @@ import logging
 import sys
 import time
 
+try:
+    import ujson as json
+except ImportError:
+    try:
+        import simplejson as json
+    except ImportError:
+        import json
+
 from pympler.process import ProcessMemoryInfo
 
 from stacktach import db, views