diff --git a/index.js b/index.js
index 92d0e87..fb66d60 100644
--- a/index.js
+++ b/index.js
@@ -27,7 +27,7 @@ function recurseElement(report, rawHtml, el) {
       });
     }
   }
-  if (["audio", "video", "img"].includes(el.name)) {
+  if (["audio", "video", "img", "source"].includes(el.name)) {
     if (el.attribs.src) {
       checkUrl(report, rawHtml, "media", el, el.attribs.src);
     } else {