diff --git a/requirements.txt b/requirements.txt
index dcb961954..6d0967366 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 docopt==0.6.2
 Jinja2==3.1.6
 marisa-trie==1.4.1
-mediawiki-langcodes==0.2.20  # for up-to-date langs data, required by wikitextprocessor
+mediawiki-langcodes==0.2.21  # for up-to-date langs data, required by wikitextprocessor
 mistune==3.2.0  # for DictFile reading
 pyglossary==5.3.0
 python-idzip==0.3.10