diff --git a/simp_le.py b/simp_le.py
index 671c702..7973555 100755
--- a/simp_le.py
+++ b/simp_le.py
@@ -1270,7 +1270,7 @@ def new_data(args, existing):
 
     client = registered_client(args, existing.account_key)
 
-    authorizations = dict(
+    authorizations = collections.OrderedDict(
         (vhost.name, client.request_domain_challenges(
             vhost.name, new_authz_uri=client.directory.new_authz))
         for vhost in args.vhosts