--- a/hgext/convert/cvs.py	Sun Oct 06 17:59:15 2019 -0400
+++ b/hgext/convert/cvs.py	Sun Oct 06 19:25:18 2019 -0400
@@ -19,6 +19,7 @@
 from mercurial import (
     encoding,
     error,
+    pycompat,
     util,
 )
 from mercurial.utils import (
@@ -319,7 +320,7 @@
         if full:
             raise error.Abort(_(b"convert from cvs does not support --full"))
         self._parse()
-        return sorted(self.files[rev].iteritems()), {}, set()
+        return sorted(pycompat.iteritems(self.files[rev])), {}, set()
 
     def getcommit(self, rev):
         self._parse()