diff --git a/configuration.yaml b/configuration.yaml
index ab7d5961..210a20ca 100644
--- a/configuration.yaml
+++ b/configuration.yaml
@@ -1,3 +1,4 @@
+---
 timelines:
   - {'date': '2016-09-12T00:00', 'name': 'PTL nomination starts'}
   - {'date': '2016-09-18T23:45', 'name': 'PTL nomination ends'}
diff --git a/doc/source/_exts/candidates.py b/doc/source/_exts/candidates.py
index 773a4ae8..8882249a 100644
--- a/doc/source/_exts/candidates.py
+++ b/doc/source/_exts/candidates.py
@@ -14,7 +14,6 @@
 """
 
 import os
-import urllib
 import yaml
 
 from jinja2 import FileSystemLoader