diff --git a/components/engine/api/server/router/container/container_routes.go b/components/engine/api/server/router/container/container_routes.go
index 2852623fe9..078352fb8d 100644
--- a/components/engine/api/server/router/container/container_routes.go
+++ b/components/engine/api/server/router/container/container_routes.go
@@ -520,9 +520,9 @@ func (s *containerRouter) wsContainersAttach(ctx context.Context, w http.Respons
 		}()
 
 		conn := <-wsChan
-		// In case version is higher than 1.26, a binary frame will be sent.
+		// In case version is higher than 1.27, a binary frame will be sent.
 		// See 28176 for details.
-		if versions.GreaterThanOrEqualTo(version, "1.26") {
+		if versions.GreaterThanOrEqualTo(version, "1.27") {
 			conn.PayloadType = websocket.BinaryFrame
 		}
 		return conn, conn, conn, nil
diff --git a/components/engine/api/server/router/network/network_routes.go b/components/engine/api/server/router/network/network_routes.go
index 970a391f3d..5427de62d8 100644
--- a/components/engine/api/server/router/network/network_routes.go
+++ b/components/engine/api/server/router/network/network_routes.go
@@ -60,11 +60,11 @@ SKIP:
 		}
 
 		var nr *types.NetworkResource
-		// Versions < 1.26 fetches all the containers attached to a network
+		// Versions < 1.27 fetches all the containers attached to a network
 		// in a network list api call. It is a heavy weight operation when
-		// run across all the networks. Starting API version 1.26, this detailed
+		// run across all the networks. Starting API version 1.27, this detailed
 		// info is available for network specific GET API (equivalent to inspect)
-		if versions.LessThan(httputils.VersionFromContext(ctx), "1.26") {
+		if versions.LessThan(httputils.VersionFromContext(ctx), "1.27") {
 			nr = n.buildDetailedNetworkResources(nw)
 		} else {
 			nr = n.buildNetworkResource(nw)
diff --git a/components/engine/cli/command/service/opts.go b/components/engine/cli/command/service/opts.go
index 9a0ae64ca9..35c5f2f657 100644
--- a/components/engine/cli/command/service/opts.go
+++ b/components/engine/cli/command/service/opts.go
@@ -469,7 +469,7 @@ func addServiceFlags(cmd *cobra.Command, opts *serviceOptions) {
 	flags.SetAnnotation(flagTTY, "version", []string{"1.25"})
 
 	flags.BoolVar(&opts.readOnly, flagReadOnly, false, "Mount the container's root filesystem as read only")
-	flags.SetAnnotation(flagReadOnly, "version", []string{"1.26"})
+	flags.SetAnnotation(flagReadOnly, "version", []string{"1.27"})
 }
 
 const (
diff --git a/components/engine/client/client.go b/components/engine/client/client.go
index 75cfc8698b..df3698adc6 100644
--- a/components/engine/client/client.go
+++ b/components/engine/client/client.go
@@ -53,13 +53,11 @@ import (
 	"path/filepath"
 	"strings"
 
+	"github.com/docker/docker/api"
 	"github.com/docker/go-connections/sockets"
 	"github.com/docker/go-connections/tlsconfig"
 )
 
-// DefaultVersion is the version of the current stable API
-const DefaultVersion string = "1.26"
-
 // Client is the API client that performs all operations
 // against a docker server.
 type Client struct {
@@ -115,7 +113,7 @@ func NewEnvClient() (*Client, error) {
 	}
 	version := os.Getenv("DOCKER_API_VERSION")
 	if version == "" {
-		version = DefaultVersion
+		version = api.DefaultVersion
 	}
 
 	cli, err := NewClient(host, version, client, nil)
diff --git a/components/engine/client/client_test.go b/components/engine/client/client_test.go
index 7c26403ebe..64188d5fb1 100644
--- a/components/engine/client/client_test.go
+++ b/components/engine/client/client_test.go
@@ -11,6 +11,7 @@ import (
 	"strings"
 	"testing"
 
+	"github.com/docker/docker/api"
 	"github.com/docker/docker/api/types"
 	"golang.org/x/net/context"
 )
@@ -26,7 +27,7 @@ func TestNewEnvClient(t *testing.T) {
 	}{
 		{
 			envs:            map[string]string{},
-			expectedVersion: DefaultVersion,
+			expectedVersion: api.DefaultVersion,
 		},
 		{
 			envs: map[string]string{
@@ -38,21 +39,21 @@ func TestNewEnvClient(t *testing.T) {
 			envs: map[string]string{
 				"DOCKER_CERT_PATH": "testdata/",
 			},
-			expectedVersion: DefaultVersion,
+			expectedVersion: api.DefaultVersion,
 		},
 		{
 			envs: map[string]string{
 				"DOCKER_CERT_PATH":  "testdata/",
 				"DOCKER_TLS_VERIFY": "1",
 			},
-			expectedVersion: DefaultVersion,
+			expectedVersion: api.DefaultVersion,
 		},
 		{
 			envs: map[string]string{
 				"DOCKER_CERT_PATH": "testdata/",
 				"DOCKER_HOST":      "https://notaunixsocket",
 			},
-			expectedVersion: DefaultVersion,
+			expectedVersion: api.DefaultVersion,
 		},
 		{
 			envs: map[string]string{
@@ -64,7 +65,7 @@ func TestNewEnvClient(t *testing.T) {
 			envs: map[string]string{
 				"DOCKER_HOST": "invalid://url",
 			},
-			expectedVersion: DefaultVersion,
+			expectedVersion: api.DefaultVersion,
 		},
 		{
 			envs: map[string]string{
@@ -262,8 +263,8 @@ func TestNewEnvClientSetsDefaultVersion(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	if client.version != DefaultVersion {
-		t.Fatalf("Expected %s, got %s", DefaultVersion, client.version)
+	if client.version != api.DefaultVersion {
+		t.Fatalf("Expected %s, got %s", api.DefaultVersion, client.version)
 	}
 
 	expected := "1.22"