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
 ~~~~~~~~~~~~~~~~~~~~
diff --git a/vectors/cryptography_vectors/x509/tls-feature-ocsp-staple.pem b/vectors/cryptography_vectors/x509/tls-feature-ocsp-staple.pem
new file mode 100644
index 0000000..55c18f2
--- /dev/null
+++ b/vectors/cryptography_vectors/x509/tls-feature-ocsp-staple.pem
@@ -0,0 +1,33 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----