diff --git a/redash/query_runner/elasticsearch.py b/redash/query_runner/elasticsearch.py
index 6b83a1d445..26cdcb9973 100644
--- a/redash/query_runner/elasticsearch.py
+++ b/redash/query_runner/elasticsearch.py
@@ -1,4 +1,4 @@
-import json
+import simplejson as json
 import logging
 import sys
 import urllib
diff --git a/requirements.txt b/requirements.txt
index 2ccc3df6ca..8d3246c760 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -41,3 +41,4 @@ pystache==0.5.4
 parsedatetime==2.1
 cryptography==1.4
 Flask-Limiter==0.9.3
+simplejson==3.10.0