diff --git a/server/website/website/tasks/async_tasks.py b/server/website/website/tasks/async_tasks.py
index b9d0af6..75c0ae4 100644
--- a/server/website/website/tasks/async_tasks.py
+++ b/server/website/website/tasks/async_tasks.py
@@ -174,6 +174,7 @@ def clean_metric_data(metric_matrix, metric_labels, session):
             del metric_labels[i]
     return matrix, metric_labels
 
+
 def save_execution_time(start_ts, fn, result):
     end_ts = time.time()
     exec_time = end_ts - start_ts
diff --git a/server/website/website/tasks/periodic_tasks.py b/server/website/website/tasks/periodic_tasks.py
index 72ac69c..ca22b19 100644
--- a/server/website/website/tasks/periodic_tasks.py
+++ b/server/website/website/tasks/periodic_tasks.py
@@ -4,8 +4,8 @@
 # Copyright (c) 2017-18, Carnegie Mellon University Database Group
 #
 import copy
-import numpy as np
 import time
+import numpy as np
 from pytz import timezone
 
 from celery import shared_task
@@ -30,6 +30,7 @@ LOG = get_task_logger(__name__)
 # Only process workload containing this minimum amount of results
 MIN_WORKLOAD_RESULTS_COUNT = 5
 
+
 def save_execution_time(start_ts, fn):
     end_ts = time.time()
     exec_time = end_ts - start_ts