diff --git a/go.mod b/go.mod
index c3de213..e5d2940 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.22
 toolchain go1.22.8
 
 require (
-	github.com/blinklabs-io/cardano-models v0.3.8
+	github.com/blinklabs-io/cardano-models v0.4.0
 	github.com/blinklabs-io/gouroboros v0.105.2
 	github.com/fxamacker/cbor/v2 v2.7.0
 	github.com/gin-contrib/cors v1.7.3
diff --git a/go.sum b/go.sum
index eea6909..b806190 100644
--- a/go.sum
+++ b/go.sum
@@ -1,7 +1,7 @@
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
-github.com/blinklabs-io/cardano-models v0.3.8 h1:Ic+gNeTwAj2etmkRHQbWg3TqAvd8yvVdXBrTy9Ewf5Y=
-github.com/blinklabs-io/cardano-models v0.3.8/go.mod h1:uDEiazZ7jdZTKNJALwRQ7t7k2plm+d9zIqXwi1tWNtw=
+github.com/blinklabs-io/cardano-models v0.4.0 h1:Wz8QtSKmPXcf+6jTU8B1wUDP/T0XkBrBefkWuuMIqKs=
+github.com/blinklabs-io/cardano-models v0.4.0/go.mod h1:rpSFMN5o9X+kqGmfvpDSPadD0xO+2qoB3wNVMj+I6/Y=
 github.com/blinklabs-io/gouroboros v0.105.2 h1:4le/9xA1x626hPp1z/rQQalM5lInqKl006O7v5G1dQE=
 github.com/blinklabs-io/gouroboros v0.105.2/go.mod h1:W7ENnAVntdrUg5c7SIfEhADTKgeXFNankI5Rfeyb5k4=
 github.com/bytedance/sonic v1.12.6 h1:/isNmCUF2x3Sh8RAp/4mh4ZGkcFAX/hLrzrK3AvpRzk=