diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index f18a5f2..ab60fdb 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -67,6 +67,7 @@
 * CAST5 (ECB) from :rfc:`2144`.
 * CAST5 (CBC, CFB, OFB) generated by this project.
   See: :doc:`/development/custom-vectors/cast5`
+* IDEA (ECB) from the `NESSIE IDEA vectors`_ created by `NESSIE`_.
 
 Two Factor Authentication
 ~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -122,3 +123,5 @@
 .. _`FIPS 186-2`: http://csrc.nist.gov/groups/STM/cavp/documents/dss/186-2dsatestvectors.zip
 .. _`FIPS 186-3`: http://csrc.nist.gov/groups/STM/cavp/documents/dss/186-3dsatestvectors.zip
 .. _`GnuTLS example keys`: https://gitorious.org/gnutls/gnutls/commit/ad2061deafdd7db78fd405f9d143b0a7c579da7b
+.. _`NESSIE IDEA vectors`: https://www.cosic.esat.kuleuven.be/nessie/testvectors/bc/idea/Idea-128-64.verified.test-vectors
+.. _`NESSIE`: https://en.wikipedia.org/wiki/NESSIE