diff --git a/contrib/FastSync/sigs/JUnderwood.utxo-sets.asc b/contrib/FastSync/sigs/JUnderwood.utxo-sets.asc
index ecbfb73..4ae3e08 100644
--- a/contrib/FastSync/sigs/JUnderwood.utxo-sets.asc
+++ b/contrib/FastSync/sigs/JUnderwood.utxo-sets.asc
@@ -7,14 +7,15 @@ eabaaa717bb8eeaf603e383dd8642d9d34df8e767fccbd208b0c936b79c82742  utxo-snapshot-
 58f65fc3e2abc367602c07ab0e7ae4a042e6acf2bc026623c7322d1886f52098  utxo-snapshot-bitcoin-mainnet-585333.tar
 52f0fc62dd28d016f49a75c22a6fa0827efc730f882bfa8cbc5ef96736d12100  utxo-snapshot-bitcoin-mainnet-609375.tar
 0afe8ca07e0ad2b538f43fc3ada89500b3e8594e8c16e0813c30d25fcff0d5a3  utxo-snapshot-bitcoin-mainnet-651474.tar
+587ac27b1929123313f842edbdb798afe116548e2a1bddea46d8d7068a6bc156  utxo-snapshot-bitcoin-mainnet-680891.tar
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