diff --git a/redash/query_runner/big_query.py b/redash/query_runner/big_query.py
index 41eaae5045..9636ed41d0 100644
--- a/redash/query_runner/big_query.py
+++ b/redash/query_runner/big_query.py
@@ -303,7 +303,7 @@ def run_query(self, query, user):
             data = self._get_query_result(jobs, query)
             error = None
 
-            json_data = json_dumps(data)
+            json_data = json_dumps(data, ignore_nan=True)
         except apiclient.errors.HttpError as e:
             json_data = None
             if e.resp.status == 400: