--- a/hgext3rd/evolve/obsexchange.py	Wed Jul 03 11:37:29 2019 -0700
+++ b/hgext3rd/evolve/obsexchange.py	Wed Jul 03 11:13:47 2019 -0700
@@ -221,7 +221,7 @@
         from mercurial import wireproto as wireprototypes
         wireprotov1server = wireprototypes
     opts = wireprotov1server.options('', ['heads', 'common'], others)
-    for k, v in opts.iteritems():
+    for k, v in opts.items():
         if k in ('heads', 'common'):
             opts[k] = wireprototypes.decodelist(v)
     obsdata = _getobsmarkersstream(repo, **opts)