diff --git a/spacy/cli/converters/conllu2json.py b/spacy/cli/converters/conllu2json.py
index 3a7a68e4a..8f2900a9b 100644
--- a/spacy/cli/converters/conllu2json.py
+++ b/spacy/cli/converters/conllu2json.py
@@ -6,7 +6,7 @@ import re
 from ...gold import iob_to_biluo
 
 
-def conllu2json(input_data, n_sents=10, use_morphology=False, lang=None):
+def conllu2json(input_data, n_sents=10, use_morphology=False, lang=None, **_):
     """
     Convert conllu files into JSON format for use with train cli.
     use_morphology parameter enables appending morphology to tags, which is