diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 744302e..bc171b2 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -153,6 +153,9 @@
 * ``san_idna_names.pem`` - An RSA 2048 bit self-signed certificate containing
   a subject alternative name extension with ``rfc822Name``, ``dNSName``, and
   ``uniformResourceIdentifier`` general names with IDNA (:rfc:`5895`) encoding.
+* ``san_wildcard_idna.pem`` - An RSA 2048 bit self-signed certificate
+  containing a subject alternative name extension with a ``dNSName`` general
+  name with a wildcard IDNA (:rfc:`5895`) domain.
 * ``san_idna2003_dnsname.pem`` - An RSA 2048 bit self-signed certificate
   containing a subject alternative name extension with an IDNA 2003
   (:rfc:`3490`) ``dNSName``.
diff --git a/vectors/cryptography_vectors/x509/custom/san_wildcard_idna.pem b/vectors/cryptography_vectors/x509/custom/san_wildcard_idna.pem
new file mode 100644
index 0000000..f405553
--- /dev/null
+++ b/vectors/cryptography_vectors/x509/custom/san_wildcard_idna.pem
@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----