diff --git a/go.mod b/go.mod
index fa34df0..820a3e7 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/blinklabs-io/tx-submit-api
 go 1.20
 
 require (
-	github.com/blinklabs-io/gouroboros v0.54.0
+	github.com/blinklabs-io/gouroboros v0.55.0
 	github.com/fxamacker/cbor/v2 v2.5.0
 	github.com/gin-contrib/zap v0.2.0
 	github.com/gin-gonic/gin v1.9.1
diff --git a/go.sum b/go.sum
index 3228912..306e617 100644
--- a/go.sum
+++ b/go.sum
@@ -46,8 +46,8 @@ github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/bits-and-blooms/bitset v1.2.0 h1:Kn4yilvwNtMACtf1eYDlG8H77R07mZSPbMjLyS07ChA=
 github.com/bits-and-blooms/bitset v1.2.0/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
-github.com/blinklabs-io/gouroboros v0.54.0 h1:ZRp+L7Xb2wRn3N02a7EQ8jpBfqL6FKjnpauJdCiHEqE=
-github.com/blinklabs-io/gouroboros v0.54.0/go.mod h1:ID2Lq1XtYrBvmk/y+yQiX45sZiV8n+urOmT0s46d2+U=
+github.com/blinklabs-io/gouroboros v0.55.0 h1:Sdjy8WwaeiVdnBys+xxYkUEWgNMN0QztlgOkFVzdNQU=
+github.com/blinklabs-io/gouroboros v0.55.0/go.mod h1:D5YJka8EyVmiXNMbRvjH23H9lNMLA4+qSlNNC/j7R0k=
 github.com/bytedance/sonic v1.5.0/go.mod h1:ED5hyg4y6t3/9Ku1R6dU/4KyJ48DZ4jPhfY1O2AihPM=
 github.com/bytedance/sonic v1.10.0-rc/go.mod h1:ElCzW+ufi8qKqNW0FY314xriJhyJhuoJ3gFZdAHF7NM=
 github.com/bytedance/sonic v1.10.0 h1:qtNZduETEIWJVIyDl01BeNxur2rW9OwTQ/yBqFRkKEk=
diff --git a/internal/api/api.go b/internal/api/api.go
index 786d092..5df68f9 100644
--- a/internal/api/api.go
+++ b/internal/api/api.go
@@ -47,8 +47,8 @@ import (
 //	@contact.url	https://blinklabs.io
 //	@contact.email	support@blinklabs.io
 
-//	@license.name	Apache 2.0
-//	@license.url	http://www.apache.org/licenses/LICENSE-2.0.html
+// @license.name	Apache 2.0
+// @license.url	http://www.apache.org/licenses/LICENSE-2.0.html
 func Start(cfg *config.Config) error {
 	// Disable gin debug and color output
 	gin.SetMode(gin.ReleaseMode)
@@ -321,7 +321,7 @@ func handleSubmitTx(c *gin.Context) {
 		oConn.Close()
 	}()
 	// Determine transaction type (era)
-	txType, err := determineTransactionType(txRawBytes)
+	txType, err := ledger.DetermineTransactionType(txRawBytes)
 	if err != nil {
 		c.JSON(400, "could not parse transaction to determine type")
 		return
@@ -343,29 +343,3 @@ func handleSubmitTx(c *gin.Context) {
 	// Increment custom metric
 	_ = ginmetrics.GetMonitor().GetMetric("tx_submit_count").Inc(nil)
 }
-
-func determineTransactionType(data []byte) (uint16, error) {
-	// TODO: uncomment this once the following issue is resolved:
-	// https://github.com/blinklabs-io/gouroboros/issues/206
-	/*
-		if _, err := ledger.NewByronTransactionFromCbor(data); err == nil {
-			return ledger.TX_TYPE_BYRON, nil
-		}
-	*/
-	if _, err := ledger.NewShelleyTransactionFromCbor(data); err == nil {
-		return ledger.TX_TYPE_SHELLEY, nil
-	}
-	if _, err := ledger.NewAllegraTransactionFromCbor(data); err == nil {
-		return ledger.TX_TYPE_ALLEGRA, nil
-	}
-	if _, err := ledger.NewMaryTransactionFromCbor(data); err == nil {
-		return ledger.TX_TYPE_MARY, nil
-	}
-	if _, err := ledger.NewAlonzoTransactionFromCbor(data); err == nil {
-		return ledger.TX_TYPE_ALONZO, nil
-	}
-	if _, err := ledger.NewBabbageTransactionFromCbor(data); err == nil {
-		return ledger.TX_TYPE_BABBAGE, nil
-	}
-	return 0, fmt.Errorf("unknown transaction type")
-}