diff --git a/blssig/aggregation.go b/blssig/aggregation.go
index ea468305..22e5bc9a 100644
--- a/blssig/aggregation.go
+++ b/blssig/aggregation.go
@@ -10,8 +10,8 @@ import (
 	"github.com/filecoin-project/go-f3/internal/measurements"
 	"go.opentelemetry.io/otel/metric"
 
-	"github.com/drand/kyber"
-	"github.com/drand/kyber/sign"
+	"go.dedis.ch/kyber/v4"
+	"go.dedis.ch/kyber/v4/sign"
 )
 
 // Max size of the point cache.
@@ -103,7 +103,7 @@ func (v *Verifier) pubkeysToMask(pubkeys []gpbft.PubKey) (*sign.Mask, error) {
 		kPubkeys = append(kPubkeys, point.Clone())
 	}
 
-	mask, err := sign.NewMask(v.suite, kPubkeys, nil)
+	mask, err := sign.NewMask(kPubkeys, nil)
 	if err != nil {
 		return nil, fmt.Errorf("creating key mask: %w", err)
 	}
diff --git a/blssig/cache_test.go b/blssig/cache_test.go
index 91d564f7..33eb651a 100644
--- a/blssig/cache_test.go
+++ b/blssig/cache_test.go
@@ -4,9 +4,9 @@ import (
 	"runtime"
 	"testing"
 
-	bls12381 "github.com/drand/kyber-bls12381"
-	"github.com/drand/kyber/sign/bdn"
 	"github.com/stretchr/testify/require"
+	bls12381 "go.dedis.ch/kyber/v4/pairing/bls12381/kilic"
+	"go.dedis.ch/kyber/v4/sign/bdn"
 
 	"github.com/filecoin-project/go-f3/gpbft"
 )
diff --git a/blssig/signer.go b/blssig/signer.go
index 9c3cf6f8..f7618778 100644
--- a/blssig/signer.go
+++ b/blssig/signer.go
@@ -5,10 +5,10 @@ import (
 	"context"
 	"errors"
 
-	"github.com/drand/kyber"
-	bls12381 "github.com/drand/kyber-bls12381"
-	"github.com/drand/kyber/sign/bdn"
 	"github.com/filecoin-project/go-f3/gpbft"
+	"go.dedis.ch/kyber/v4"
+	bls12381 "go.dedis.ch/kyber/v4/pairing/bls12381/kilic"
+	"go.dedis.ch/kyber/v4/sign/bdn"
 )
 
 var _ gpbft.Signer = (*Signer)(nil)
diff --git a/blssig/verifier.go b/blssig/verifier.go
index ad6c746d..1dece32f 100644
--- a/blssig/verifier.go
+++ b/blssig/verifier.go
@@ -7,10 +7,9 @@ import (
 	"runtime/debug"
 	"sync"
 
-	"github.com/drand/kyber"
-	bls12381 "github.com/drand/kyber-bls12381"
-	"github.com/drand/kyber/pairing"
-	"github.com/drand/kyber/sign/bdn"
+	"go.dedis.ch/kyber/v4"
+	bls12381 "go.dedis.ch/kyber/v4/pairing/bls12381/kilic"
+	"go.dedis.ch/kyber/v4/sign/bdn"
 	"go.opentelemetry.io/otel/metric"
 
 	"github.com/filecoin-project/go-f3/gpbft"
@@ -18,7 +17,6 @@ import (
 )
 
 type Verifier struct {
-	suite    pairing.Suite
 	scheme   *bdn.Scheme
 	keyGroup kyber.Group
 
@@ -29,7 +27,6 @@ type Verifier struct {
 func VerifierWithKeyOnG1() *Verifier {
 	suite := bls12381.NewBLS12381Suite()
 	return &Verifier{
-		suite:    suite,
 		scheme:   bdn.NewSchemeOnG2(suite),
 		keyGroup: suite.G1(),
 	}
diff --git a/blssig/verifier_test.go b/blssig/verifier_test.go
index bced0983..b1e4551a 100644
--- a/blssig/verifier_test.go
+++ b/blssig/verifier_test.go
@@ -4,9 +4,9 @@ import (
 	"context"
 	"testing"
 
-	bls12381 "github.com/drand/kyber-bls12381"
-	"github.com/drand/kyber/sign/bdn"
 	"github.com/stretchr/testify/require"
+	bls12381 "go.dedis.ch/kyber/v4/pairing/bls12381/kilic"
+	"go.dedis.ch/kyber/v4/sign/bdn"
 )
 
 func BenchmarkBLSSigning(b *testing.B) {
diff --git a/go.mod b/go.mod
index 2dfe4150..4455239c 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,6 @@ module github.com/filecoin-project/go-f3
 go 1.22
 
 require (
-	github.com/drand/kyber v1.3.1
-	github.com/drand/kyber-bls12381 v0.3.1
 	github.com/filecoin-project/go-bitfield v0.2.4
 	github.com/filecoin-project/go-clock v0.1.0
 	github.com/filecoin-project/go-state-types v0.14.0
@@ -22,6 +20,7 @@ require (
 	github.com/stretchr/testify v1.9.0
 	github.com/urfave/cli/v2 v2.25.5
 	github.com/whyrusleeping/cbor-gen v0.1.1
+	go.dedis.ch/kyber/v4 v4.0.0-pre2.0.20240916105431-b283c0cdd30a
 	go.opentelemetry.io/otel v1.28.0
 	go.opentelemetry.io/otel/metric v1.28.0
 	go.uber.org/multierr v1.11.0
diff --git a/go.sum b/go.sum
index 00790557..e9926b05 100644
--- a/go.sum
+++ b/go.sum
@@ -47,10 +47,6 @@ github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0/go.mod h1:v57UDF4pDQJcEfFUCRop3
 github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
 github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
 github.com/docker/go-units v0.5.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
-github.com/drand/kyber v1.3.1 h1:E0p6M3II+loMVwTlAp5zu4+GGZFNiRfq02qZxzw2T+Y=
-github.com/drand/kyber v1.3.1/go.mod h1:f+mNHjiGT++CuueBrpeMhFNdKZAsy0tu03bKq9D5LPA=
-github.com/drand/kyber-bls12381 v0.3.1 h1:KWb8l/zYTP5yrvKTgvhOrk2eNPscbMiUOIeWBnmUxGo=
-github.com/drand/kyber-bls12381 v0.3.1/go.mod h1:H4y9bLPu7KZA/1efDg+jtJ7emKx+ro3PU7/jWUVt140=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/elastic/gosigar v0.12.0/go.mod h1:iXRIGg2tLnu7LBdpqzyQfGDEidKCfWcCMS0WKyPWoMs=
 github.com/elastic/gosigar v0.14.2 h1:Dg80n8cr90OZ7x+bAax/QjoW/XqTI11RmA79ZwIm9/4=
@@ -436,6 +432,8 @@ github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1
 github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 go.dedis.ch/fixbuf v1.0.3 h1:hGcV9Cd/znUxlusJ64eAlExS+5cJDIyTyEG+otu5wQs=
 go.dedis.ch/fixbuf v1.0.3/go.mod h1:yzJMt34Wa5xD37V5RTdmp38cz3QhMagdGoem9anUalw=
+go.dedis.ch/kyber/v4 v4.0.0-pre2.0.20240916105431-b283c0cdd30a h1:FF9ZER1DSNuJWcpC/P9AJ9LpswxPxyyQ65YTOqdzDd0=
+go.dedis.ch/kyber/v4 v4.0.0-pre2.0.20240916105431-b283c0cdd30a/go.mod h1:tg6jwKTYEjm94VxkFwiQy+ec9hoQvccIU989wNjXWVI=
 go.opencensus.io v0.18.0/go.mod h1:vKdFvxhtzZ9onBp9VKHK8z/sRpBMnKAsufL7wlDrCOA=
 go.opentelemetry.io/otel v1.28.0 h1:/SqNcYk+idO0CxKEUOtKQClMK/MimZihKYMruSMViUo=
 go.opentelemetry.io/otel v1.28.0/go.mod h1:q68ijF8Fc8CnMHKyzqL6akLO46ePnjkgfIMIjUIX9z4=
diff --git a/sim/signing/bls.go b/sim/signing/bls.go
index e9a3878d..cf551897 100644
--- a/sim/signing/bls.go
+++ b/sim/signing/bls.go
@@ -5,11 +5,11 @@ import (
 	"errors"
 	"sync"
 
-	bls12381 "github.com/drand/kyber-bls12381"
-	"github.com/drand/kyber/pairing"
-	"github.com/drand/kyber/sign/bdn"
 	"github.com/filecoin-project/go-f3/blssig"
 	"github.com/filecoin-project/go-f3/gpbft"
+	"go.dedis.ch/kyber/v4/pairing"
+	bls12381 "go.dedis.ch/kyber/v4/pairing/bls12381/kilic"
+	"go.dedis.ch/kyber/v4/sign/bdn"
 )
 
 var _ Backend = (*BLSBackend)(nil)
diff --git a/test/signing_suite_test.go b/test/signing_suite_test.go
index 95dd9cb9..b1a4e097 100644
--- a/test/signing_suite_test.go
+++ b/test/signing_suite_test.go
@@ -5,13 +5,13 @@ import (
 	"slices"
 	"testing"
 
-	bls12381 "github.com/drand/kyber-bls12381"
-	"github.com/drand/kyber/sign/bdn"
 	"github.com/filecoin-project/go-f3/blssig"
 	"github.com/filecoin-project/go-f3/gpbft"
 	"github.com/filecoin-project/go-f3/sim/signing"
 	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
+	bls12381 "go.dedis.ch/kyber/v4/pairing/bls12381/kilic"
+	"go.dedis.ch/kyber/v4/sign/bdn"
 )
 
 type (