diff --git a/packages/griffith-mp4/src/fetch.js b/packages/griffith-mp4/src/fetch.js
index aa640016..77a8a5fc 100644
--- a/packages/griffith-mp4/src/fetch.js
+++ b/packages/griffith-mp4/src/fetch.js
@@ -10,6 +10,7 @@ export default class FragmentFetch {
     xhr.open('get', url)
     xhr.responseType = 'arraybuffer'
     xhr.setRequestHeader('Range', `bytes=${start}-${end}`)
+    xhr.setRequestHeader('Access-Control-Allow-Methods', 'GET, OPTIONS')
     xhr.onload = () => {
       if (xhr.status === 200 || xhr.status === 206) {
         callback(xhr.response)