diff --git a/go.mod b/go.mod
index 88751208e8..21a26c12a8 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@ require (
 	github.com/multiformats/go-multiaddr v0.3.1
 	github.com/nspcc-dev/hrw v1.0.9
 	github.com/nspcc-dev/neo-go v0.95.0
-	github.com/nspcc-dev/neofs-api-go v1.26.2-0.20210528133202-6cd349738889
+	github.com/nspcc-dev/neofs-api-go v1.26.2-0.20210531071300-89be8d3f5ada
 	github.com/nspcc-dev/neofs-crypto v0.3.0
 	github.com/nspcc-dev/neofs-sdk-go v0.0.0-20210520210714-9dee13f0d556
 	github.com/nspcc-dev/tzhash v1.4.0
diff --git a/go.sum b/go.sum
index 6ae40af0bf..0c8a5ef70c 100644
Binary files a/go.sum and b/go.sum differ
diff --git a/pkg/network/cache/client.go b/pkg/network/cache/client.go
index b386c32edb..2e77ada0b4 100644
--- a/pkg/network/cache/client.go
+++ b/pkg/network/cache/client.go
@@ -75,3 +75,21 @@ func (c *ClientCache) Get(netAddr *network.Address) (client.Client, error) {
 
 	return cli, nil
 }
+
+// CloseAll closes underlying connections of all cached clients.
+//
+// Ignores closing errors.
+func (c *ClientCache) CloseAll() {
+	c.mu.RLock()
+
+	{
+		for _, cl := range c.clients {
+			con := cl.Conn()
+			if con != nil {
+				_ = con.Close()
+			}
+		}
+	}
+
+	c.mu.RUnlock()
+}