diff --git a/README.md b/README.md
index 5ff0445..a757896 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,11 @@ backend node (and otherwise default settings):
 $ neofs-http-gw -p 192.168.130.72:8080
 $ HTTP_GW_PEERS_0_ADDRESS=192.168.130.72:8080 neofs-http-gw
 ```
+It's also possible to specify uri scheme (grpc or grpcs) when using `-p`:
+```
+$ neofs-http-gw -p grpc://192.168.130.72:8080
+$ HTTP_GW_PEERS_0_ADDRESS=grpcs://192.168.130.72:8080 neofs-http-gw
+```
 
 ## Configuration
 
@@ -145,9 +150,7 @@ default. To enable them use `--pprof` and `--metrics` flags or
 
 You can tune gRPC interface parameters with `--connect_timeout` (for
 connection to node) and `--request_timeout` (for request processing over
-established connection) options as well as `HTTP_GW_KEEPALIVE_TIME`
-(peer pinging interval), `HTTP_GW_KEEPALIVE_TIMEOUT` (peer pinging timeout)
-and `HTTP_GW_KEEPALIVE_PERMIT_WITHOUT_STREAM` environment variables.
+established connection) options.
 
 gRPC-level checks allow gateway to detect dead peers, but it declares them
 unhealthy at pool level once per `--rebalance_timer` interval, so check for it
diff --git a/app.go b/app.go
index 8e89484..86da641 100644
--- a/app.go
+++ b/app.go
@@ -119,9 +119,6 @@ func newApp(ctx context.Context, opt ...Option) App {
 		NodeRequestTimeout:      a.cfg.GetDuration(cfgReqTimeout),
 		ClientRebalanceInterval: a.cfg.GetDuration(cfgRebalance),
 		SessionExpirationEpoch:  math.MaxUint64,
-		KeepaliveTime:           a.cfg.GetDuration(cfgKeepaliveTime),
-		KeepaliveTimeout:        a.cfg.GetDuration(cfgKeepaliveTimeout),
-		KeepalivePermitWoStream: a.cfg.GetBool(cfgKeepalivePermitWithoutStream),
 	}
 	a.pool, err = pb.Build(ctx, opts)
 	if err != nil {
diff --git a/go.mod b/go.mod
index 12535bb..2aaa8e3 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ require (
 	github.com/mr-tron/base58 v1.1.3 // indirect
 	github.com/nspcc-dev/neofs-api-go v1.27.0
 	github.com/nspcc-dev/neofs-crypto v0.3.0
-	github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210604112451-f16d38c7b92a
+	github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210609143631-0d3c078a0d9b
 	github.com/prometheus/client_golang v1.9.0
 	github.com/prometheus/common v0.15.0
 	github.com/spf13/pflag v1.0.5
diff --git a/go.sum b/go.sum
index 9d80a35..90c40de 100644
--- a/go.sum
+++ b/go.sum
@@ -319,8 +319,8 @@ github.com/nspcc-dev/neofs-crypto v0.2.0/go.mod h1:F/96fUzPM3wR+UGsPi3faVNmFlA9K
 github.com/nspcc-dev/neofs-crypto v0.2.3/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
 github.com/nspcc-dev/neofs-crypto v0.3.0 h1:zlr3pgoxuzrmGCxc5W8dGVfA9Rro8diFvVnBg0L4ifM=
 github.com/nspcc-dev/neofs-crypto v0.3.0/go.mod h1:8w16GEJbH6791ktVqHN9YRNH3s9BEEKYxGhlFnp0cDw=
-github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210604112451-f16d38c7b92a h1:bVvyR+Y+UmElTFKY0ifjtvWteYSm93jihKV1rh4wW5s=
-github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210604112451-f16d38c7b92a/go.mod h1:1djNrOkpTTbNUlJM/MvTmohJUaWKUMy9JHSCCA8rJEc=
+github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210609143631-0d3c078a0d9b h1:2alc6tGPHScEATOxlrYuHCTl+DbhVaqigT5Bo1QXY90=
+github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210609143631-0d3c078a0d9b/go.mod h1:1djNrOkpTTbNUlJM/MvTmohJUaWKUMy9JHSCCA8rJEc=
 github.com/nspcc-dev/rfc6979 v0.1.0/go.mod h1:exhIh1PdpDC5vQmyEsGvc4YDM/lyQp/452QxGq/UEso=
 github.com/nspcc-dev/rfc6979 v0.2.0 h1:3e1WNxrN60/6N0DW7+UYisLeZJyfqZTNOjeV/toYvOE=
 github.com/nspcc-dev/rfc6979 v0.2.0/go.mod h1:exhIh1PdpDC5vQmyEsGvc4YDM/lyQp/452QxGq/UEso=
diff --git a/settings.go b/settings.go
index 21de46e..bf26d2c 100644
--- a/settings.go
+++ b/settings.go
@@ -23,18 +23,10 @@ const (
 	defaultRequestTimeout = 15 * time.Second
 	defaultConnectTimeout = 30 * time.Second
 
-	defaultKeepaliveTime    = 10 * time.Second
-	defaultKeepaliveTimeout = 10 * time.Second
-
 	cfgListenAddress  = "listen_address"
 	cfgTLSCertificate = "tls_certificate"
 	cfgTLSKey         = "tls_key"
 
-	// KeepAlive.
-	cfgKeepaliveTime                = "keepalive.time"
-	cfgKeepaliveTimeout             = "keepalive.timeout"
-	cfgKeepalivePermitWithoutStream = "keepalive.permit_without_stream"
-
 	// Web.
 	cfgWebReadBufferSize     = "web.read_buffer_size"
 	cfgWebWriteBufferSize    = "web.write_buffer_size"
@@ -130,12 +122,6 @@ func settings() *viper.Viper {
 	v.SetDefault(cfgLoggerSamplingInitial, 1000)
 	v.SetDefault(cfgLoggerSamplingThereafter, 1000)
 
-	// keepalive:
-	// If set below 10s, a minimum value of 10s will be used instead.
-	v.SetDefault(cfgKeepaliveTime, defaultKeepaliveTime)
-	v.SetDefault(cfgKeepaliveTimeout, defaultKeepaliveTimeout)
-	v.SetDefault(cfgKeepalivePermitWithoutStream, true)
-
 	// web-server:
 	v.SetDefault(cfgWebReadBufferSize, 4096)
 	v.SetDefault(cfgWebWriteBufferSize, 4096)