diff --git a/.tx/config b/.tx/config
index 19e13451c1..1c9e6ebce6 100644
--- a/.tx/config
+++ b/.tx/config
@@ -8,6 +8,12 @@ source_file = wagtail/admin/locale/en/LC_MESSAGES/django.po
 source_lang = en
 type = PO
 
+[wagtail.wagtailadminjs]
+file_filter = wagtail/admin/locale/<lang>/LC_MESSAGES/djangojs.po
+source_file = wagtail/admin/locale/en/LC_MESSAGES/djangojs.po
+source_lang = en
+type = PO
+
 [wagtail.wagtailcore]
 file_filter = wagtail/locale/<lang>/LC_MESSAGES/django.po
 source_file = wagtail/locale/en/LC_MESSAGES/django.po