diff --git a/src/trix/config/dompurify.js b/src/trix/config/dompurify.js
index 81889fc5e..461c472d0 100644
--- a/src/trix/config/dompurify.js
+++ b/src/trix/config/dompurify.js
@@ -1,4 +1,5 @@
 export default {
   ADD_ATTR: [ "language" ],
+  SAFE_FOR_XML: true,
   RETURN_DOM: true
 }