--- a/dataimport/pgstore.py	Mon Sep 14 16:03:07 2015 +0200
+++ b/dataimport/pgstore.py	Thu Sep 17 09:52:06 2015 +0200
@@ -27,7 +27,7 @@
 from collections import defaultdict
 from base64 import b64encode
 
-from six import string_types
+from six import string_types, integer_types
 from six.moves import cPickle as pickle, range
 
 from cubicweb.utils import make_uid
@@ -166,7 +166,7 @@
 # (types, converter) list.
 _COPYFROM_BUFFER_CONVERTERS = [
     (type(None), _copyfrom_buffer_convert_None),
-    ((long, int, float), _copyfrom_buffer_convert_number),
+    (integer_types + (float,), _copyfrom_buffer_convert_number),
     (string_types, _copyfrom_buffer_convert_string),
     (datetime, _copyfrom_buffer_convert_datetime),
     (date, _copyfrom_buffer_convert_date),