diff --git a/bip-0373.mediawiki b/bip-0373.mediawiki
index dad06c84..335d5ea9 100644
--- a/bip-0373.mediawiki
+++ b/bip-0373.mediawiki
@@ -296,7 +296,7 @@ The following are invalid PSBTs
 
 ==Reference implementation==
 
-The reference implementation of the PSBT format is available at TBD.
+The reference implementation of the PSBT format is available at Bitcoin Core [[https://github.com/bitcoin/bitcoin/pull/31247|PR #31247]].
 
 ==Acknowledgements==