add issuer alternative name test vector
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 02cc122..5f0e198 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -203,6 +203,8 @@
* ``cp_user_notice_no_explicit_text.pem`` - An RSA 2048 bit self-signed
certificate containing a certificate policies extension with a user notice
with no explicit text.
+* ``ian_uri.pem`` - An RSA 2048 bit certificate containing an issuer
+ alternative name extension with a ``URI`` general name.
* ``ocsp_nocheck.pem`` - An RSA 2048 bit self-signed certificate containing
an ``OCSPNoCheck`` extension.