add X509 test vector with a TLS Feature (RFC 7633) extension (#3898)
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 7a5f879..dc89caf 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -167,6 +167,9 @@
* ``wosign-bc-invalid.pem`` - A certificate issued by WoSign that contains
a basic constraints extension with CA set to false and a path length of zero
in violation of :rfc:`5280`.
+* ``tls-feature-ocsp-staple.pem`` - A certificate issued by Let's Encrypt that
+ contains a TLS Feature extension with the ``status_request`` feature (commonly
+ known as OCSP Must-Staple).
Custom X.509 Vectors
~~~~~~~~~~~~~~~~~~~~