diff --git a/blockchain/compress.go b/blockchain/compress.go
index 56f84b14..3f5450ee 100644
--- a/blockchain/compress.go
+++ b/blockchain/compress.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2015-2016 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -9,7 +9,7 @@ import (
 	"fmt"
 
 	"github.com/decred/dcrd/blockchain/stake/v3"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/txscript/v3"
 )
 
diff --git a/blockchain/fullblocktests/generate.go b/blockchain/fullblocktests/generate.go
index a47a04a8..3ed7c7fb 100644
--- a/blockchain/fullblocktests/generate.go
+++ b/blockchain/fullblocktests/generate.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2016 The btcsuite developers
-// Copyright (c) 2016-2019 The Decred developers
+// Copyright (c) 2016-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -18,7 +18,7 @@ import (
 	"github.com/decred/dcrd/blockchain/v3/chaingen"
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/txscript/v3"
 	"github.com/decred/dcrd/wire"
diff --git a/blockchain/go.mod b/blockchain/go.mod
index 49aaf307..9c161a66 100644
--- a/blockchain/go.mod
+++ b/blockchain/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/decred/dcrd/chaincfg/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/database/v2 v2.0.1
 	github.com/decred/dcrd/dcrec v1.0.0
-	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
+	github.com/decred/dcrd/dcrec/secp256k1/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrutil/v3 v3.0.0-20200104000002-54b67d3474fb
 	github.com/decred/dcrd/gcs/v2 v2.0.0
 	github.com/decred/dcrd/txscript/v3 v3.0.0-20200104000002-54b67d3474fb
@@ -20,6 +20,7 @@ require (
 replace (
 	github.com/decred/dcrd/blockchain/stake/v3 => ./stake
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/txscript/v3 => ../txscript
 )
diff --git a/blockchain/stake/go.mod b/blockchain/stake/go.mod
index 4d13aabc..d7af444c 100644
--- a/blockchain/stake/go.mod
+++ b/blockchain/stake/go.mod
@@ -15,6 +15,7 @@ require (
 
 replace (
 	github.com/decred/dcrd/chaincfg/v3 => ../../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../../dcrutil
 	github.com/decred/dcrd/txscript/v3 => ../../txscript
 )
diff --git a/database/go.mod b/database/go.mod
index 46848d55..82a1e64a 100644
--- a/database/go.mod
+++ b/database/go.mod
@@ -19,5 +19,6 @@ require (
 
 replace (
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 )
diff --git a/dcrec/secp256k1/example_test.go b/dcrec/secp256k1/example_test.go
index 713a4a47..43676fbf 100644
--- a/dcrec/secp256k1/example_test.go
+++ b/dcrec/secp256k1/example_test.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2014 The btcsuite developers
-// Copyright (c) 2015-2016 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -10,7 +10,7 @@ import (
 	"fmt"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // This example demonstrates signing a message with a secp256k1 private key that
diff --git a/dcrec/secp256k1/genprecomps.go b/dcrec/secp256k1/genprecomps.go
index 9dd48349..f57a17e8 100644
--- a/dcrec/secp256k1/genprecomps.go
+++ b/dcrec/secp256k1/genprecomps.go
@@ -1,5 +1,5 @@
 // Copyright 2015 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -18,7 +18,7 @@ import (
 	"log"
 	"os"
 
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 func main() {
@@ -43,6 +43,7 @@ func main() {
 	base64.StdEncoding.Encode(encoded, compressed.Bytes())
 
 	fmt.Fprintln(fi, "// Copyright (c) 2015 The btcsuite developers")
+	fmt.Fprintln(fi, "// Copyright (c) 2015-2020 The Decred developers")
 	fmt.Fprintln(fi, "// Use of this source code is governed by an ISC")
 	fmt.Fprintln(fi, "// license that can be found in the LICENSE file.")
 	fmt.Fprintln(fi)
diff --git a/dcrec/secp256k1/go.mod b/dcrec/secp256k1/go.mod
index 916d8e98..3b26f3b2 100644
--- a/dcrec/secp256k1/go.mod
+++ b/dcrec/secp256k1/go.mod
@@ -1,4 +1,4 @@
-module github.com/decred/dcrd/dcrec/secp256k1/v2
+module github.com/decred/dcrd/dcrec/secp256k1/v3
 
 go 1.11
 
diff --git a/dcrec/secp256k1/schnorr/ecdsa.go b/dcrec/secp256k1/schnorr/ecdsa.go
index 2fe9d9ea..a5c9dff6 100644
--- a/dcrec/secp256k1/schnorr/ecdsa.go
+++ b/dcrec/secp256k1/schnorr/ecdsa.go
@@ -1,4 +1,4 @@
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -12,7 +12,7 @@ import (
 	"math/big"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // scalarSize is the size of an encoded big endian scalar.
diff --git a/dcrec/secp256k1/schnorr/ecdsa_test.go b/dcrec/secp256k1/schnorr/ecdsa_test.go
index 8e48ec18..bb031246 100644
--- a/dcrec/secp256k1/schnorr/ecdsa_test.go
+++ b/dcrec/secp256k1/schnorr/ecdsa_test.go
@@ -1,4 +1,4 @@
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -11,7 +11,7 @@ import (
 	"testing"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 type SchnorrSigningTestVectorHex struct {
diff --git a/dcrec/secp256k1/schnorr/pubkey.go b/dcrec/secp256k1/schnorr/pubkey.go
index 70bfba0a..2a46ee80 100644
--- a/dcrec/secp256k1/schnorr/pubkey.go
+++ b/dcrec/secp256k1/schnorr/pubkey.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2014 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -8,7 +8,7 @@ package schnorr
 import (
 	"fmt"
 
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // These constants define the lengths of serialized public keys.
diff --git a/dcrec/secp256k1/schnorr/signature.go b/dcrec/secp256k1/schnorr/signature.go
index d1ef4698..74074f80 100644
--- a/dcrec/secp256k1/schnorr/signature.go
+++ b/dcrec/secp256k1/schnorr/signature.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2014 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -10,7 +10,7 @@ import (
 	"math/big"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // Signature is a type representing a Schnorr signature.
diff --git a/dcrec/secp256k1/schnorr/threshold.go b/dcrec/secp256k1/schnorr/threshold.go
index 9d8dca94..e010d242 100644
--- a/dcrec/secp256k1/schnorr/threshold.go
+++ b/dcrec/secp256k1/schnorr/threshold.go
@@ -1,4 +1,4 @@
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -8,7 +8,7 @@ import (
 	"fmt"
 	"math/big"
 
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // Sha256VersionStringRFC6979 is the RFC6979 nonce version for a Schnorr signature
diff --git a/dcrec/secp256k1/schnorr/threshold_test.go b/dcrec/secp256k1/schnorr/threshold_test.go
index a21c0e7e..e963b8fa 100644
--- a/dcrec/secp256k1/schnorr/threshold_test.go
+++ b/dcrec/secp256k1/schnorr/threshold_test.go
@@ -1,4 +1,4 @@
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -12,7 +12,7 @@ import (
 	"testing"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 type signerHex struct {
diff --git a/dcrutil/address.go b/dcrutil/address.go
index 09a55f67..dab563d4 100644
--- a/dcrutil/address.go
+++ b/dcrutil/address.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013, 2014 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -13,8 +13,8 @@ import (
 	"github.com/decred/dcrd/crypto/ripemd160"
 	"github.com/decred/dcrd/dcrec"
 	"github.com/decred/dcrd/dcrec/edwards/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2/schnorr"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3/schnorr"
 )
 
 var (
diff --git a/dcrutil/address_test.go b/dcrutil/address_test.go
index 3a97e274..e506e9be 100644
--- a/dcrutil/address_test.go
+++ b/dcrutil/address_test.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013, 2014 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -15,7 +15,7 @@ import (
 	"github.com/decred/base58"
 	"github.com/decred/dcrd/crypto/ripemd160"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // mockAddrParams implements the AddressParams interface and is used throughout
diff --git a/dcrutil/go.mod b/dcrutil/go.mod
index 172e6d16..cd7c7817 100644
--- a/dcrutil/go.mod
+++ b/dcrutil/go.mod
@@ -10,8 +10,11 @@ require (
 	github.com/decred/dcrd/crypto/ripemd160 v1.0.0
 	github.com/decred/dcrd/dcrec v1.0.0
 	github.com/decred/dcrd/dcrec/edwards/v2 v2.0.0
-	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
+	github.com/decred/dcrd/dcrec/secp256k1/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/wire v1.3.0
 )
 
-replace github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+replace (
+	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
+)
diff --git a/dcrutil/wif.go b/dcrutil/wif.go
index 64ff5674..1b969904 100644
--- a/dcrutil/wif.go
+++ b/dcrutil/wif.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2016 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -14,7 +14,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/dcrec"
 	"github.com/decred/dcrd/dcrec/edwards/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // ErrMalformedPrivateKey describes an error where a WIF-encoded private key
diff --git a/fees/go.mod b/fees/go.mod
index 3ffd209c..478d44c0 100644
--- a/fees/go.mod
+++ b/fees/go.mod
@@ -15,6 +15,7 @@ require (
 replace (
 	github.com/decred/dcrd/blockchain/stake/v3 => ../blockchain/stake
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/txscript/v3 => ../txscript
 )
diff --git a/gcs/go.mod b/gcs/go.mod
index ad4c168f..50080d78 100644
--- a/gcs/go.mod
+++ b/gcs/go.mod
@@ -14,6 +14,7 @@ require (
 replace (
 	github.com/decred/dcrd/blockchain/stake/v3 => ../blockchain/stake
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/txscript/v3 => ../txscript
 )
diff --git a/go.mod b/go.mod
index cfd9182f..e5c5a2eb 100644
--- a/go.mod
+++ b/go.mod
@@ -18,7 +18,7 @@ require (
 	github.com/decred/dcrd/crypto/ripemd160 v1.0.0
 	github.com/decred/dcrd/database/v2 v2.0.1
 	github.com/decred/dcrd/dcrec v1.0.0
-	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
+	github.com/decred/dcrd/dcrec/secp256k1/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrjson/v3 v3.0.1
 	github.com/decred/dcrd/dcrutil/v3 v3.0.0-20200104000002-54b67d3474fb
 	github.com/decred/dcrd/fees/v2 v2.0.0
@@ -57,7 +57,7 @@ replace (
 	github.com/decred/dcrd/crypto/ripemd160 => ./crypto/ripemd160
 	github.com/decred/dcrd/database/v2 => ./database
 	github.com/decred/dcrd/dcrec => ./dcrec
-	github.com/decred/dcrd/dcrec/secp256k1/v2 => ./dcrec/secp256k1
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ./dcrec/secp256k1
 	github.com/decred/dcrd/dcrjson/v3 => ./dcrjson
 	github.com/decred/dcrd/dcrutil/v3 => ./dcrutil
 	github.com/decred/dcrd/fees/v2 => ./fees
diff --git a/go.sum b/go.sum
index 1b4a9ec2..9bb24a42 100644
--- a/go.sum
+++ b/go.sum
@@ -10,6 +10,7 @@ github.com/decred/base58 v1.0.2 h1:yupIH6bg+q7KYfBk7oUv3xFjKGb5Ypm4+v/61X4keGY=
 github.com/decred/base58 v1.0.2/go.mod h1:pXP9cXCfM2sFLb2viz2FNIdeMWmZDBKG3ZBYbiSM78E=
 github.com/decred/dcrd/dcrec/edwards/v2 v2.0.0 h1:E5KszxGgpjpmW8vN811G6rBAZg0/S/DftdGqN4FW5x4=
 github.com/decred/dcrd/dcrec/edwards/v2 v2.0.0/go.mod h1:d0H8xGMWbiIQP7gN3v2rByWUcuZPm9YsgmnfoxgbINc=
+github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0/go.mod h1:3s92l0paYkZoIHuj4X93Teg/HB7eGM9x/zokGw+u4mY=
 github.com/decred/dcrd/rpc/jsonrpc/types v1.0.1 h1:sWsGtWzdmrna6aysDCHwjANTJh+Lxt2xp6S10ahP79Y=
 github.com/decred/dcrd/rpc/jsonrpc/types v1.0.1/go.mod h1:dJUp9PoyFYklzmlImpVkVLOr6j4zKuUv66YgemP2sd8=
 github.com/decred/dcrwallet/rpc/jsonrpc/types v1.3.0 h1:yCxtFqK7X6GvZWQzHXjCwoGCy9YVe3tGEwxCjW5rYQk=
diff --git a/hdkeychain/extendedkey.go b/hdkeychain/extendedkey.go
index f0cad805..30ba3558 100644
--- a/hdkeychain/extendedkey.go
+++ b/hdkeychain/extendedkey.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2014-2016 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -21,7 +21,7 @@ import (
 
 	"github.com/decred/base58"
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 )
 
diff --git a/hdkeychain/go.mod b/hdkeychain/go.mod
index 96d8f5fc..f1d7348c 100644
--- a/hdkeychain/go.mod
+++ b/hdkeychain/go.mod
@@ -7,11 +7,12 @@ require (
 	github.com/decred/dcrd/chaincfg/chainhash v1.0.2
 	github.com/decred/dcrd/chaincfg/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrec v1.0.0
-	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
+	github.com/decred/dcrd/dcrec/secp256k1/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrutil/v3 v3.0.0-20200104000002-54b67d3474fb
 )
 
 replace (
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 )
diff --git a/mempool/go.mod b/mempool/go.mod
index 424fbb94..dc504686 100644
--- a/mempool/go.mod
+++ b/mempool/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/decred/dcrd/chaincfg/chainhash v1.0.2
 	github.com/decred/dcrd/chaincfg/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrec v1.0.0
-	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
+	github.com/decred/dcrd/dcrec/secp256k1/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrutil/v3 v3.0.0-20200104000002-54b67d3474fb
 	github.com/decred/dcrd/mining/v3 v3.0.0-20200104000002-54b67d3474fb
 	github.com/decred/dcrd/txscript/v3 v3.0.0-20200104000002-54b67d3474fb
@@ -21,6 +21,7 @@ replace (
 	github.com/decred/dcrd/blockchain/stake/v3 => ../blockchain/stake
 	github.com/decred/dcrd/blockchain/v3 => ../blockchain
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/mining/v3 => ../mining
 	github.com/decred/dcrd/txscript/v3 => ../txscript
diff --git a/mempool/go.sum b/mempool/go.sum
index 3af41bbc..3caa0a63 100644
--- a/mempool/go.sum
+++ b/mempool/go.sum
@@ -36,7 +36,6 @@ github.com/decred/dcrd/dcrutil/v2 v2.0.1 h1:aL+c7o7Q66HV1gIif+XkNYo9DeorN3l01Vns
 github.com/decred/dcrd/dcrutil/v2 v2.0.1/go.mod h1:JdEgF6eh0TTohPeiqDxqDSikTSvAczq0J7tFMyyeD+k=
 github.com/decred/dcrd/gcs/v2 v2.0.0 h1:nCc3q9iIwIpF0khTSiC7xYgojKoKnPrqrgVjboOBXDE=
 github.com/decred/dcrd/gcs/v2 v2.0.0/go.mod h1:3XjKcrtvB+r2ezhIsyNCLk6dRnXRJVyYmsd1P3SkU3o=
-github.com/decred/dcrd/lru v1.0.0/go.mod h1:mxKOwFd7lFjN2GZYsiz/ecgqR6kkYAl+0pz0tEMk218=
 github.com/decred/dcrd/txscript/v2 v2.1.0 h1:IKIpNm0lPmNQoaZ2zxZm1qMwfmLb/XXeahxXlfc+MrA=
 github.com/decred/dcrd/txscript/v2 v2.1.0/go.mod h1:XaJAVrZU4NWRx4UEzTiDAs86op1m8GRJLz24SDBKOi0=
 github.com/decred/dcrd/wire v1.3.0 h1:X76I2/a8esUmxXmFpJpAvXEi014IA4twgwcOBeIS8lE=
diff --git a/mempool/mempool_test.go b/mempool/mempool_test.go
index 69dd032d..a1cc4cb1 100644
--- a/mempool/mempool_test.go
+++ b/mempool/mempool_test.go
@@ -22,7 +22,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/mining/v3"
 	"github.com/decred/dcrd/txscript/v3"
diff --git a/mempool/policy_test.go b/mempool/policy_test.go
index f85c4b95..3f5535a9 100644
--- a/mempool/policy_test.go
+++ b/mempool/policy_test.go
@@ -15,7 +15,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/txscript/v3"
 	"github.com/decred/dcrd/wire"
diff --git a/mining/go.mod b/mining/go.mod
index a3f25d5f..4badd428 100644
--- a/mining/go.mod
+++ b/mining/go.mod
@@ -13,6 +13,7 @@ replace (
 	github.com/decred/dcrd/blockchain/stake/v3 => ../blockchain/stake
 	github.com/decred/dcrd/blockchain/v3 => ../blockchain
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/txscript/v3 => ../txscript
 )
diff --git a/peer/go.mod b/peer/go.mod
index 7add1e4d..49f8285f 100644
--- a/peer/go.mod
+++ b/peer/go.mod
@@ -14,6 +14,7 @@ require (
 
 replace (
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/txscript/v3 => ../txscript
 )
diff --git a/require.go b/require.go
index 543d32cd..8b2ddd45 100644
--- a/require.go
+++ b/require.go
@@ -1,4 +1,4 @@
-// Copyright (c) 2019 The Decred developers
+// Copyright (c) 2019-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -13,6 +13,6 @@ package main
 
 import (
 	_ "github.com/decred/dcrd/bech32"
-	_ "github.com/decred/dcrd/dcrec/secp256k1/v2"
+	_ "github.com/decred/dcrd/dcrec/secp256k1/v3"
 	_ "github.com/decred/dcrd/fees/v2"
 )
diff --git a/rpcclient/go.mod b/rpcclient/go.mod
index 3baf6e73..8715a65e 100644
--- a/rpcclient/go.mod
+++ b/rpcclient/go.mod
@@ -20,6 +20,7 @@ require (
 
 replace (
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 	github.com/decred/dcrd/rpc/jsonrpc/types/v2 => ../rpc/jsonrpc/types
 )
diff --git a/rpcserver.go b/rpcserver.go
index a8f83e73..73ab17ce 100644
--- a/rpcserver.go
+++ b/rpcserver.go
@@ -44,7 +44,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/database/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrjson/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/fees/v2"
diff --git a/rpctest/memwallet.go b/rpctest/memwallet.go
index a66d3593..3da8a551 100644
--- a/rpctest/memwallet.go
+++ b/rpctest/memwallet.go
@@ -15,7 +15,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/hdkeychain/v2"
 	"github.com/decred/dcrd/rpcclient/v5"
diff --git a/rpctest/votingwallet.go b/rpctest/votingwallet.go
index e79e96ec..48b593a9 100644
--- a/rpctest/votingwallet.go
+++ b/rpctest/votingwallet.go
@@ -15,7 +15,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	dcrdtypes "github.com/decred/dcrd/rpc/jsonrpc/types/v2"
 	"github.com/decred/dcrd/rpcclient/v5"
diff --git a/txscript/engine.go b/txscript/engine.go
index 68fa7d49..8b344e7b 100644
--- a/txscript/engine.go
+++ b/txscript/engine.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2017 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -10,7 +10,7 @@ import (
 	"math/big"
 	"strings"
 
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/wire"
 )
 
diff --git a/txscript/example_test.go b/txscript/example_test.go
index 982567c1..0a54c76c 100644
--- a/txscript/example_test.go
+++ b/txscript/example_test.go
@@ -12,7 +12,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/txscript/v3"
 	"github.com/decred/dcrd/wire"
diff --git a/txscript/go.mod b/txscript/go.mod
index 2e5651a4..307e96d5 100644
--- a/txscript/go.mod
+++ b/txscript/go.mod
@@ -8,7 +8,7 @@ require (
 	github.com/decred/dcrd/crypto/ripemd160 v1.0.0
 	github.com/decred/dcrd/dcrec v1.0.0
 	github.com/decred/dcrd/dcrec/edwards/v2 v2.0.0
-	github.com/decred/dcrd/dcrec/secp256k1/v2 v2.0.0
+	github.com/decred/dcrd/dcrec/secp256k1/v3 v3.0.0-00010101000000-000000000000
 	github.com/decred/dcrd/dcrutil/v3 v3.0.0-20200104000002-54b67d3474fb
 	github.com/decred/dcrd/wire v1.3.0
 	github.com/decred/slog v1.0.0
@@ -16,5 +16,6 @@ require (
 
 replace (
 	github.com/decred/dcrd/chaincfg/v3 => ../chaincfg
+	github.com/decred/dcrd/dcrec/secp256k1/v3 => ../dcrec/secp256k1
 	github.com/decred/dcrd/dcrutil/v3 => ../dcrutil
 )
diff --git a/txscript/opcode.go b/txscript/opcode.go
index 8cc1d4de..7b9765cf 100644
--- a/txscript/opcode.go
+++ b/txscript/opcode.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2016 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -18,8 +18,8 @@ import (
 	"github.com/decred/dcrd/crypto/ripemd160"
 	"github.com/decred/dcrd/dcrec"
 	"github.com/decred/dcrd/dcrec/edwards/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2/schnorr"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3/schnorr"
 	"github.com/decred/dcrd/wire"
 )
 
diff --git a/txscript/sigcache.go b/txscript/sigcache.go
index 88a7754e..d9f016b3 100644
--- a/txscript/sigcache.go
+++ b/txscript/sigcache.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2015-2016 The btcsuite developers
-// Copyright (c) 2016-2019 The Decred developers
+// Copyright (c) 2016-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -10,7 +10,7 @@ import (
 	"sync"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // sigCacheEntry represents an entry in the SigCache. Entries within the
diff --git a/txscript/sigcache_test.go b/txscript/sigcache_test.go
index c2db6147..6fbd169c 100644
--- a/txscript/sigcache_test.go
+++ b/txscript/sigcache_test.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2015-2016 The btcsuite developers
-// Copyright (c) 2016 The Decred developers
+// Copyright (c) 2016-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -11,7 +11,7 @@ import (
 	"testing"
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 )
 
 // genRandomSig returns a random message, a signature of the message under the
diff --git a/txscript/sign.go b/txscript/sign.go
index 5f85092b..0a46e9d9 100644
--- a/txscript/sign.go
+++ b/txscript/sign.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2015 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -11,8 +11,8 @@ import (
 
 	"github.com/decred/dcrd/dcrec"
 	"github.com/decred/dcrd/dcrec/edwards/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2/schnorr"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3/schnorr"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/wire"
 )
diff --git a/txscript/sign_test.go b/txscript/sign_test.go
index 7ac25cda..87ffc05c 100644
--- a/txscript/sign_test.go
+++ b/txscript/sign_test.go
@@ -16,8 +16,8 @@ import (
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
 	"github.com/decred/dcrd/dcrec/edwards/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2/schnorr"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3/schnorr"
 	"github.com/decred/dcrd/dcrutil/v3"
 	"github.com/decred/dcrd/wire"
 )
diff --git a/txscript/standard.go b/txscript/standard.go
index fb7497e8..92761d84 100644
--- a/txscript/standard.go
+++ b/txscript/standard.go
@@ -1,5 +1,5 @@
 // Copyright (c) 2013-2017 The btcsuite developers
-// Copyright (c) 2015-2019 The Decred developers
+// Copyright (c) 2015-2020 The Decred developers
 // Use of this source code is governed by an ISC
 // license that can be found in the LICENSE file.
 
@@ -11,7 +11,7 @@ import (
 
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 )
 
diff --git a/txscript/standard_test.go b/txscript/standard_test.go
index 4ecbf3ce..cb70a0bc 100644
--- a/txscript/standard_test.go
+++ b/txscript/standard_test.go
@@ -14,7 +14,7 @@ import (
 	"github.com/decred/dcrd/chaincfg/chainhash"
 	"github.com/decred/dcrd/chaincfg/v3"
 	"github.com/decred/dcrd/dcrec"
-	"github.com/decred/dcrd/dcrec/secp256k1/v2"
+	"github.com/decred/dcrd/dcrec/secp256k1/v3"
 	"github.com/decred/dcrd/dcrutil/v3"
 )