diff --git a/lib/onebox/engine/simplecast_onebox.rb b/lib/onebox/engine/simplecast_onebox.rb
index 5d9f15a69c3..b4c8790cbb9 100644
--- a/lib/onebox/engine/simplecast_onebox.rb
+++ b/lib/onebox/engine/simplecast_onebox.rb
@@ -8,7 +8,7 @@ module Onebox
 
       matches_regexp(/https?:\/\/(.+)?simplecast.com\/(episodes|s)\/.*/)
       always_https
-      requires_iframe_origins("https://embed.simplecast.com")
+      requires_iframe_origins("https://player.simplecast.com")
 
       def to_html
         get_oembed.html