diff --git a/spec.html b/spec.html
index 7720b31..817428f 100644
--- a/spec.html
+++ b/spec.html
@@ -80,7 +80,7 @@
                   authors: [
                       "Frédéric Wang"
                   ],
-                  href: "https://frederic-wang.fr/opentype-math-in-harfbuzz.html"
+                  href: "https://frederic-wang.fr/2016/04/16/opentype-math-in-harfbuzz/"
               }
           },
           preProcess: [initReport],