diff --git a/extensions/amp-reddit/0.1/validator-amp-reddit.protoascii b/extensions/amp-reddit/0.1/validator-amp-reddit.protoascii
index a90455c27cc2..787d631a1590 100644
--- a/extensions/amp-reddit/0.1/validator-amp-reddit.protoascii
+++ b/extensions/amp-reddit/0.1/validator-amp-reddit.protoascii
@@ -55,6 +55,14 @@ tags: {  # <amp-reddit>
   tag_name: "AMP-REDDIT"
   disallowed_ancestor: "AMP-SIDEBAR"
   also_requires_tag: "amp-reddit extension .js script"
+  attrs: {
+    name: "data-embedlive"
+    value_regex_casei: "(false|true)"
+  }
+  attrs: {
+    name: "data-embedparent"
+    value_regex_casei: "(false|true)"
+  }
   attrs: {
     name: "data-embedtype"
     mandatory: true