diff --git a/src/components/TextareaCopyable.vue b/src/components/TextareaCopyable.vue
index 78f26d76..16e11512 100644
--- a/src/components/TextareaCopyable.vue
+++ b/src/components/TextareaCopyable.vue
@@ -25,6 +25,7 @@ const props = withDefaults(
 hljs.registerLanguage('sql', sqlHljs);
 hljs.registerLanguage('json', jsonHljs);
 hljs.registerLanguage('html', xmlHljs);
+hljs.registerLanguage('xml', xmlHljs);
 hljs.registerLanguage('yaml', yamlHljs);
 
 const { value, language, followHeightOf, copyPlacement, copyMessage } = toRefs(props);