diff --git a/src/supported-locales.mjs b/src/supported-locales.mjs
index 8e627adc2..a679141b0 100644
--- a/src/supported-locales.mjs
+++ b/src/supported-locales.mjs
@@ -100,6 +100,10 @@ const customLocales = {
   ht: {
     locale: 'ht',
     parentLocale: 'fr',
+  },
+    hyw: {
+    locale: 'hyw',
+    parentLocale: 'hyw',
   },
   oc: {
     locale: 'oc',