diff --git a/lib/media/content_workarounds.js b/lib/media/content_workarounds.js
index 2452ac3b13..a06a998a8c 100644
--- a/lib/media/content_workarounds.js
+++ b/lib/media/content_workarounds.js
@@ -69,6 +69,18 @@ shaka.media.ContentWorkarounds = class {
         })
         .fullBox('encv', onEncryptionMetadataBox)
         .fullBox('enca', onEncryptionMetadataBox)
+        .fullBox('hev1', (box) => {
+          boxesToModify.push({
+            box,
+            newType: ContentWorkarounds.BOX_TYPE_ENCV_,
+          });
+        })
+        .fullBox('hvc1', (box) => {
+          boxesToModify.push({
+            box,
+            newType: ContentWorkarounds.BOX_TYPE_ENCV_,
+          });
+        })
         .fullBox('avc1', (box) => {
           boxesToModify.push({
             box,