diff --git a/bip-noreplay.mediawiki b/bip-noreplay.mediawiki
index 947c6115..83680e3f 100644
--- a/bip-noreplay.mediawiki
+++ b/bip-noreplay.mediawiki
@@ -99,4 +99,4 @@ Old nodes will likely also not relay transactions using this opcode for the same
 
 ==Reference Implementation==
 
-TODO
+https://github.com/bitcoin/bitcoin/compare/master...luke-jr:cbah