diff --git a/chaincfg/README.md b/chaincfg/README.md
index d1a534ba..41b9a715 100644
--- a/chaincfg/README.md
+++ b/chaincfg/README.md
@@ -3,7 +3,7 @@ chaincfg
 
 [![Build Status](https://github.com/btcsuite/btcd/workflows/Build%20and%20Test/badge.svg)](https://github.com/btcsuite/btcd/actions)
 [![ISC License](http://img.shields.io/badge/license-ISC-blue.svg)](http://copyfree.org)
-[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](https://pkg.go.dev/github.com/btcsuite/btcd/chaincfg)
+[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](https://pkg.go.dev/github.com/btcsuite/btcd/chaincfg/v2)
 
 Package chaincfg defines chain configuration parameters for the three standard
 Bitcoin networks and provides the ability for callers to define their own custom
@@ -25,7 +25,7 @@ import (
 	"log"
 
 	"github.com/btcsuite/btcd/btcutil"
-	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/btcsuite/btcd/chaincfg/v2"
 )
 
 var testnet = flag.Bool("testnet", false, "operate on the testnet Bitcoin network")
@@ -56,7 +56,7 @@ func main() {
 ## Installation and Updating
 
 ```bash
-$ go get -u github.com/btcsuite/btcd/chaincfg
+$ go get -u github.com/btcsuite/btcd/chaincfg/v2
 ```
 
 ## GPG Verification Key
diff --git a/chaincfg/deployment_time_frame.go b/chaincfg/deployment_time_frame.go
index f26d4290..c3347976 100644
--- a/chaincfg/deployment_time_frame.go
+++ b/chaincfg/deployment_time_frame.go
@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"time"
 
-	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcd/wire/v2"
 )
 
 var (
diff --git a/chaincfg/doc.go b/chaincfg/doc.go
index 65efb54f..93193dcc 100644
--- a/chaincfg/doc.go
+++ b/chaincfg/doc.go
@@ -26,7 +26,7 @@
 //	        "log"
 //
 //	        "github.com/btcsuite/btcd/btcutil"
-//	        "github.com/btcsuite/btcd/chaincfg"
+//	        "github.com/btcsuite/btcd/chaincfg/v2"
 //	)
 //
 //	var testnet = flag.Bool("testnet", false, "operate on the testnet Bitcoin network")
diff --git a/chaincfg/genesis.go b/chaincfg/genesis.go
index f734feb2..8b8f5ed8 100644
--- a/chaincfg/genesis.go
+++ b/chaincfg/genesis.go
@@ -7,8 +7,8 @@ package chaincfg
 import (
 	"time"
 
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcd/chainhash/v2"
+	"github.com/btcsuite/btcd/wire/v2"
 )
 
 // genesisCoinbaseTx is the coinbase transaction for the genesis blocks for
diff --git a/chaincfg/go.mod b/chaincfg/go.mod
new file mode 100644
index 00000000..7f6219c0
--- /dev/null
+++ b/chaincfg/go.mod
@@ -0,0 +1,23 @@
+module github.com/btcsuite/btcd/chaincfg/v2
+
+go 1.23.2
+
+require (
+	github.com/btcsuite/btcd/chainhash/v2 v2.0.0
+	github.com/btcsuite/btcd/wire/v2 v2.0.0
+	github.com/davecgh/go-spew v1.1.1
+	github.com/stretchr/testify v1.10.0
+)
+
+require (
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	golang.org/x/crypto v0.40.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)
+
+// TODO(guggero): Remove once we have a tagged version of the chainhash package.
+replace github.com/btcsuite/btcd/chainhash/v2 => ../chainhash
+
+// TODO(guggero): Remove once we have a tagged version of the wire package.
+replace github.com/btcsuite/btcd/wire/v2 => ../wire
diff --git a/chaincfg/go.sum b/chaincfg/go.sum
new file mode 100644
index 00000000..76acb2a5
--- /dev/null
+++ b/chaincfg/go.sum
@@ -0,0 +1,14 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/crypto v0.40.0 h1:r4x+VvoG5Fm+eJcxMaY8CQM7Lb0l1lsmjGBQ6s8BfKM=
+golang.org/x/crypto v0.40.0/go.mod h1:Qr1vMER5WyS2dfPHAlsOj01wgLbsyWtFn/aY+5+ZdxY=
+golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
+golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/chaincfg/params.go b/chaincfg/params.go
index 5eda0327..14056d71 100644
--- a/chaincfg/params.go
+++ b/chaincfg/params.go
@@ -13,8 +13,8 @@ import (
 	"strings"
 	"time"
 
-	"github.com/btcsuite/btcd/chaincfg/chainhash"
-	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcd/chainhash/v2"
+	"github.com/btcsuite/btcd/wire/v2"
 )
 
 // These variables are the chain proof-of-work limit parameters for each default
diff --git a/chaincfg/params_test.go b/chaincfg/params_test.go
index 4d3f4d22..c71f9ceb 100644
--- a/chaincfg/params_test.go
+++ b/chaincfg/params_test.go
@@ -10,7 +10,7 @@ import (
 	"math/big"
 	"testing"
 
-	"github.com/btcsuite/btcd/wire"
+	"github.com/btcsuite/btcd/wire/v2"
 	"github.com/stretchr/testify/require"
 )
 
diff --git a/chaincfg/register_test.go b/chaincfg/register_test.go
index db254415..eb2c8893 100644
--- a/chaincfg/register_test.go
+++ b/chaincfg/register_test.go
@@ -6,7 +6,7 @@ import (
 	"strings"
 	"testing"
 
-	. "github.com/btcsuite/btcd/chaincfg"
+	. "github.com/btcsuite/btcd/chaincfg/v2"
 )
 
 // Define some of the required parameters for a user-registered