diff --git a/bip-0374.mediawiki b/bip-0374.mediawiki
index 840bbf81..a8588b96 100644
--- a/bip-0374.mediawiki
+++ b/bip-0374.mediawiki
@@ -116,6 +116,10 @@ This proposal is compatible with all older clients.
 == Test Vectors and Reference Code ==
 
 A reference python implementation is included [https://github.com/bitcoin/bips/blob/master/bip-0374/reference.py here].
+It uses a vendored copy of the [https://github.com/secp256k1lab/secp256k1lab/ secp256k1lab] library at version 1.0.0
+(commit [https://github.com/secp256k1lab/secp256k1lab/commit/44dc4bd893b8f03e621585e3bf255253e0e0fbfb
+44dc4bd893b8f03e621585e3bf255253e0e0fbfb]).
+
 Test vectors can be generated by running <code>./bip-0374/gen_test_vectors.py</code> which will produce a CSV file of random test vectors for both generating and verifying proofs. These can be run against the reference implementation with <code>./bip-0374/run_test_vectors.py</code>.
 
 == Changelog ==