diff --git a/filter/chainsync/chainsync_test.go b/filter/chainsync/chainsync_test.go
index 715f425..f96e46e 100644
--- a/filter/chainsync/chainsync_test.go
+++ b/filter/chainsync/chainsync_test.go
@@ -91,10 +91,11 @@ func (m *MockAddress) UnmarshalCBOR(data []byte) error {
 
 // MockOutput is a mock implementation of the TransactionOutput interface
 type MockOutput struct {
-	address ledger.Address
-	amount  uint64
-	assets  *common.MultiAsset[common.MultiAssetTypeOutput]
-	datum   *cbor.LazyValue
+	address   ledger.Address
+	amount    uint64
+	assets    *common.MultiAsset[common.MultiAssetTypeOutput]
+	datum     *cbor.LazyValue
+	scriptRef common.Script
 }
 
 func (m MockOutput) Address() ledger.Address {
@@ -117,6 +118,10 @@ func (m MockOutput) DatumHash() *common.Blake2b256 {
 	return nil
 }
 
+func (m MockOutput) ScriptRef() common.Script {
+	return m.scriptRef
+}
+
 func (m MockOutput) Cbor() []byte {
 	return []byte{}
 }
diff --git a/go.mod b/go.mod
index 4ce5d0a..634019a 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ toolchain go1.24.4
 require (
 	github.com/SundaeSwap-finance/kugo v1.3.0
 	github.com/SundaeSwap-finance/ogmigo/v6 v6.0.2
-	github.com/blinklabs-io/gouroboros v0.125.1
+	github.com/blinklabs-io/gouroboros v0.127.0
 	github.com/btcsuite/btcd/btcutil v1.1.6
 	github.com/gen2brain/beeep v0.11.1
 	github.com/gin-gonic/gin v1.10.1
diff --git a/go.sum b/go.sum
index 17eb019..517f90e 100644
--- a/go.sum
+++ b/go.sum
@@ -13,8 +13,8 @@ github.com/SundaeSwap-finance/ogmigo/v6 v6.0.2/go.mod h1:FgU9nAQNyi+ApWqXB+DKAcb
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
 github.com/aws/aws-sdk-go v1.55.6 h1:cSg4pvZ3m8dgYcgqB97MrcdjUmZ1BeMYKUxMMB89IPk=
 github.com/aws/aws-sdk-go v1.55.6/go.mod h1:eRwEWoyTWFMVYVQzKMNHWP5/RV4xIUGMQfXQHfHkpNU=
-github.com/blinklabs-io/gouroboros v0.125.1 h1:ZhKgKvFEcz8OtGxGrEYh8A03nqS7+QWqDE+/sGKNKdA=
-github.com/blinklabs-io/gouroboros v0.125.1/go.mod h1:LUGnvJ1iOmpCihNxT9fyZFf6KD5E45sV8ZqEUgljzDw=
+github.com/blinklabs-io/gouroboros v0.127.0 h1:Zy+ZIMizxjL90WqexO5x0FFW8W7Nla/p45IS56xY/zw=
+github.com/blinklabs-io/gouroboros v0.127.0/go.mod h1:LUGnvJ1iOmpCihNxT9fyZFf6KD5E45sV8ZqEUgljzDw=
 github.com/blinklabs-io/ouroboros-mock v0.3.8 h1:+DAt2rx0ouZUxee5DBMgZq3I1+ZdxFSHG9g3tYl/FKU=
 github.com/blinklabs-io/ouroboros-mock v0.3.8/go.mod h1:UwQIf4KqZwO13P9d90fbi3UL/X7JaJfeEbqk+bEeFQA=
 github.com/btcsuite/btcd v0.20.1-beta/go.mod h1:wVuoA8VJLEcwgqHBwHmzLRazpKxTv13Px/pDuV7OomQ=
diff --git a/input/chainsync/block_test.go b/input/chainsync/block_test.go
index f40f242..6d7be1e 100644
--- a/input/chainsync/block_test.go
+++ b/input/chainsync/block_test.go
@@ -81,8 +81,8 @@ func (m MockBlock) Transactions() []common.Transaction {
 	return m.transactions
 }
 
-func (m MockBlock) Utxorpc() *utxorpc.Block {
-	return nil
+func (m MockBlock) Utxorpc() (*utxorpc.Block, error) {
+	return nil, nil
 }
 
 func (m MockBlock) IsShelley() bool {
diff --git a/input/chainsync/transaction_output.go b/input/chainsync/transaction_output.go
index 1c91ccc..5a3a9c3 100644
--- a/input/chainsync/transaction_output.go
+++ b/input/chainsync/transaction_output.go
@@ -153,6 +153,11 @@ func (txOut ResolvedTransactionOutput) DatumHash() *common.Blake2b256 {
 	return nil
 }
 
+func (txOut ResolvedTransactionOutput) ScriptRef() common.Script {
+	// Placeholder for script ref
+	return nil
+}
+
 func (txOut ResolvedTransactionOutput) Cbor() []byte {
 	// Placeholder for CBOR serialization
 	return []byte{}