diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 9565e0b..e2b621c 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -146,6 +146,9 @@
   using 2048 bit RSA and SHA256 generated using OpenSSL.
 * ``ec_sha256.pem`` and ``ec_sha256.der`` - Contain a certificate request
   using EC (``secp384r1``) and SHA256 generated using OpenSSL.
+* ``san_rsa_sha1.pem`` and ``san_rsa_sha1.der`` - Contain a certificate
+  request using RSA and SHA1 with a subject alternative name extension
+  generated using OpenSSL.
 
 Hashes
 ~~~~~~
diff --git a/vectors/cryptography_vectors/x509/requests/san_rsa_sha1.der b/vectors/cryptography_vectors/x509/requests/san_rsa_sha1.der
new file mode 100644
index 0000000..c950e2e
--- /dev/null
+++ b/vectors/cryptography_vectors/x509/requests/san_rsa_sha1.der
Binary files differ
diff --git a/vectors/cryptography_vectors/x509/requests/san_rsa_sha1.pem b/vectors/cryptography_vectors/x509/requests/san_rsa_sha1.pem
new file mode 100644
index 0000000..1db2bc1
--- /dev/null
+++ b/vectors/cryptography_vectors/x509/requests/san_rsa_sha1.pem
@@ -0,0 +1,18 @@
+-----BEGIN CERTIFICATE REQUEST-----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+-----END CERTIFICATE REQUEST-----