diff --git a/yolk/pypi.py b/yolk/pypi.py
index 3ba3ba0..3058775 100644
--- a/yolk/pypi.py
+++ b/yolk/pypi.py
@@ -80,7 +80,7 @@ def request(self, host, handler, request_body, verbose):
         '''Send xml-rpc request using proxy'''
         #We get a traceback if we don't have this attribute:
         self.verbose = verbose
-        url = 'http://' + host + handler
+        url = 'https://' + host + handler
         request = urllib2.Request(url)
         request.add_data(request_body)
         # Note: 'Host' and 'Content-Length' are added automatically