[bugfix] Fix AttributeError

Change-Id: Ie236bd2b0f2de39371ee0e9d9ec31fbfc3f74df5
---
M pywikibot/page/_wikibase.py
1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/pywikibot/page/_wikibase.py b/pywikibot/page/_wikibase.py
index ca4e2f1..f9911cb 100644
--- a/pywikibot/page/_wikibase.py
+++ b/pywikibot/page/_wikibase.py
@@ -342,7 +342,7 @@
                     for ref_grp_idx, ref_grp in enumerate(updated_references):
                         for ref_propid, reference in ref_grp['snaks'].items():
                             for ref_index, ref_stat in enumerate(reference):
-                                target_ref_grp = claim.references[ref_grp_idx]
+                                target_ref_grp = claim.sources[ref_grp_idx]
                                 target_ref_prop = target_ref_grp[ref_propid]
                                 target_ref = target_ref_prop[ref_index]
                                 target_ref.hash = ref_stat['hash']

