diff --git a/RELEASE_NOTES.rst b/RELEASE_NOTES.rst
index 9bc85f9bd..93a36612a 100644
--- a/RELEASE_NOTES.rst
+++ b/RELEASE_NOTES.rst
@@ -40,7 +40,7 @@ Highlights:
   new = lmdb.open("dataset_db.mdb", subdir=False, map_size=2**30)
   with new.begin(write=True) as txn:
     for key, value in old.items():
-      txn.put(key.encode(), pyon.encode(value).encode())
+      txn.put(key.encode(), pyon.encode((value, {})).encode())
   new.close()
 
 Breaking changes: