diff --git a/index.html b/index.html
index 8ededce..9350fd8 100755
--- a/index.html
+++ b/index.html
@@ -60,7 +60,13 @@
             publisher: "W3C",
             status: "2021-06-25",
             href: "https://www.w3.org/International/articles/inline-bidi-markup"
-          }
+          },
+          "TTML2": {
+            title: "Timed Text Markup Language 2 (TTML2) (2nd Edition)",
+            publisher: "W3C",
+            status: "2021-03-09",
+            href: "https://www.w3.org/TR/2021/CR-ttml2-20210309"
+          },
       },
 
       postProcess: [