diff --git a/abci/client/grpc_client.go b/abci/client/grpc_client.go
index ee35646f9..7d3351f7e 100644
--- a/abci/client/grpc_client.go
+++ b/abci/client/grpc_client.go
@@ -8,6 +8,7 @@ import (
 	"time"
 
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/tendermint/tendermint/abci/types"
 	"github.com/tendermint/tendermint/libs/log"
@@ -105,7 +106,10 @@ func (cli *grpcClient) OnStart(ctx context.Context) error {
 
 RETRY_LOOP:
 	for {
-		conn, err := grpc.Dial(cli.addr, grpc.WithInsecure(), grpc.WithContextDialer(dialerFunc))
+		conn, err := grpc.Dial(cli.addr,
+			grpc.WithTransportCredentials(insecure.NewCredentials()),
+			grpc.WithContextDialer(dialerFunc),
+		)
 		if err != nil {
 			if cli.mustConnect {
 				return err
diff --git a/abci/example/example_test.go b/abci/example/example_test.go
index 80d5a3130..f32d9df7c 100644
--- a/abci/example/example_test.go
+++ b/abci/example/example_test.go
@@ -13,6 +13,7 @@ import (
 	"github.com/stretchr/testify/require"
 
 	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/tendermint/tendermint/libs/log"
 	tmnet "github.com/tendermint/tendermint/libs/net"
@@ -142,7 +143,10 @@ func testGRPCSync(ctx context.Context, t *testing.T, app types.ABCIApplicationSe
 	t.Cleanup(func() { server.Wait() })
 
 	// Connect to the socket
-	conn, err := grpc.Dial(socket, grpc.WithInsecure(), grpc.WithContextDialer(dialerFunc))
+	conn, err := grpc.Dial(socket,
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithContextDialer(dialerFunc),
+	)
 	if err != nil {
 		t.Fatalf("Error dialing GRPC server: %v", err.Error())
 	}
diff --git a/go.mod b/go.mod
index df894ee4f..457a37a22 100644
--- a/go.mod
+++ b/go.mod
@@ -35,7 +35,8 @@ require (
 	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
 	golang.org/x/net v0.0.0-20211208012354-db4efeb81f4b
 	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	google.golang.org/grpc v1.42.0
+	google.golang.org/grpc v1.43.0
+	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
 	pgregory.net/rapid v0.4.7
 )
 
@@ -195,7 +196,6 @@ require (
 	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	google.golang.org/genproto v0.0.0-20211208223120-3a66f561d7aa // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
-	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
 	gopkg.in/ini.v1 v1.66.2 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
diff --git a/go.sum b/go.sum
index 8c303dca0..0ada1103c 100644
--- a/go.sum
+++ b/go.sum
@@ -1612,8 +1612,9 @@ google.golang.org/grpc v1.39.0/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnD
 google.golang.org/grpc v1.39.1/go.mod h1:PImNr+rS9TWYb2O4/emRugxiyHZ5JyHW5F+RPnDzfrE=
 google.golang.org/grpc v1.40.0/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
 google.golang.org/grpc v1.40.1/go.mod h1:ogyxbiOoUXAkP+4+xa6PZSE9DZgIHtSpzjDTB9KAK34=
-google.golang.org/grpc v1.42.0 h1:XT2/MFpuPFsEX2fWh3YQtHkZ+WYZFQRfaUgLZYj/p6A=
 google.golang.org/grpc v1.42.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
+google.golang.org/grpc v1.43.0 h1:Eeu7bZtDZ2DpRCsLhUlcrLnvYaMK1Gz86a+hMVvELmM=
+google.golang.org/grpc v1.43.0/go.mod h1:k+4IHHFw41K8+bbowsex27ge2rCb65oeWqe4jJ590SU=
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.1.0/go.mod h1:6Kw0yEErY5E/yWrBtf03jp27GLLJujG4z/JK95pnjjw=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
diff --git a/privval/grpc/client_test.go b/privval/grpc/client_test.go
index 98730df19..939a1989f 100644
--- a/privval/grpc/client_test.go
+++ b/privval/grpc/client_test.go
@@ -6,7 +6,8 @@ import (
 	"testing"
 	"time"
 
-	grpc "google.golang.org/grpc"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/test/bufconn"
 
 	"github.com/stretchr/testify/assert"
@@ -51,7 +52,10 @@ func TestSignerClient_GetPubKey(t *testing.T) {
 	srv, dialer := dialer(mockPV, logger)
 	defer srv.Stop()
 
-	conn, err := grpc.DialContext(ctx, "", grpc.WithInsecure(), grpc.WithContextDialer(dialer))
+	conn, err := grpc.DialContext(ctx, "",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithContextDialer(dialer),
+	)
 	if err != nil {
 		panic(err)
 	}
@@ -73,7 +77,10 @@ func TestSignerClient_SignVote(t *testing.T) {
 	srv, dialer := dialer(mockPV, logger)
 	defer srv.Stop()
 
-	conn, err := grpc.DialContext(ctx, "", grpc.WithInsecure(), grpc.WithContextDialer(dialer))
+	conn, err := grpc.DialContext(ctx, "",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithContextDialer(dialer),
+	)
 	if err != nil {
 		panic(err)
 	}
@@ -126,7 +133,10 @@ func TestSignerClient_SignProposal(t *testing.T) {
 	srv, dialer := dialer(mockPV, logger)
 	defer srv.Stop()
 
-	conn, err := grpc.DialContext(ctx, "", grpc.WithInsecure(), grpc.WithContextDialer(dialer))
+	conn, err := grpc.DialContext(ctx, "",
+		grpc.WithTransportCredentials(insecure.NewCredentials()),
+		grpc.WithContextDialer(dialer),
+	)
 	if err != nil {
 		panic(err)
 	}
diff --git a/privval/grpc/util.go b/privval/grpc/util.go
index 7e0483f9c..a73fd65b1 100644
--- a/privval/grpc/util.go
+++ b/privval/grpc/util.go
@@ -15,6 +15,7 @@ import (
 	tmnet "github.com/tendermint/tendermint/libs/net"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/keepalive"
 )
 
@@ -97,7 +98,7 @@ func DialRemoteSigner(
 		transportSecurity = GenerateTLS(cfg.ClientCertificateFile(),
 			cfg.ClientKeyFile(), cfg.RootCAFile(), logger)
 	} else {
-		transportSecurity = grpc.WithInsecure()
+		transportSecurity = grpc.WithTransportCredentials(insecure.NewCredentials())
 		logger.Info("Using an insecure gRPC connection!")
 	}