diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index e512a90..d68e1e9 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -161,6 +161,8 @@
   ``cryptography.io.pem`` certificate.
 * ``cryptography.io.precert.pem`` - A pre-certificate with the CT poison
   extension for the cryptography website.
+* ``cryptography-scts.io.pem`` - A leaf certificate issued by Let's Encrypt for
+  the cryptography website which contains signed certificate timestamps.
 * ``wildcard_san.pem`` - A leaf certificate issued by a public CA for
   ``langui.sh`` that contains wildcard entries in the SAN extension.
 * ``san_edipartyname.der`` - A DSA certificate from a `Mozilla bug`_