diff --git a/docs/conf.py b/docs/conf.py
index 75722db..0e91a59 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,2 +1,6 @@
+import sys
+import sys.path
+import os
+
 extensions = ['sphinx.ext.autodoc']
 sys.path.insert(0, os.path.abspath('../'))