add key usage vector with all 9 purposes set to true
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index e2b621c..5353b1d 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -132,6 +132,8 @@
a subject alternative name extension with the ``otherName`` general name.
* ``san_registered_id.pem`` - An RSA 1024 bit certificate containing a
subject alternative name extension with the ``registeredID`` general name.
+* ``all_key_usages.pem`` - An RSA 2048 bit self-signed certificate containing
+ a key usage extension with all nine purposes set to true.
Custom X.509 Request Vectors
~~~~~~~~~~~~~~~~~~~~~~~~~~~~