--- a/doc/build.py
+++ b/doc/build.py
@@ -14,7 +14,7 @@
     #if check_version in output:
     #  print('{} already installed'.format(package))
     #  return
-    package = 'git+git://github.com/{0}.git@{1}'.format(package, commit)
+    package = 'git+https://github.com/{0}.git@{1}'.format(package, commit)
   print('Installing {}'.format(package))
   check_call(['pip', 'install', package])