--- a/mercurial/hg.py	Mon Jul 18 22:25:09 2016 +0200
+++ b/mercurial/hg.py	Tue Jul 19 19:57:34 2016 -0700
@@ -923,7 +923,7 @@
         dst.setconfig('bundle', 'mainreporoot', r, 'copied')
 
     # copy selected local settings to the remote ui
-    for sect in ('auth', 'hostfingerprints', 'http_proxy'):
+    for sect in ('auth', 'hostfingerprints', 'hostsecurity', 'http_proxy'):
         for key, val in src.configitems(sect):
             dst.setconfig(sect, key, val, 'copied')
     v = src.config('web', 'cacerts')