diff --git a/httpimport.py b/httpimport.py
index 95c6149..9652aba 100644
--- a/httpimport.py
+++ b/httpimport.py
@@ -1,5 +1,6 @@
 #!/usr/bin/env python
 import importlib
+import importlib.machinery
 import io
 import json
 import logging