diff --git a/tests/integration/diff_test.go b/tests/integration/diff_test.go
index b9d3a7184..4785ce75a 100644
--- a/tests/integration/diff_test.go
+++ b/tests/integration/diff_test.go
@@ -10,7 +10,8 @@ import (
 )
 
 var (
-	expectedOutputMasked = `updating service svc1  {
+	expectedOutputMasked = `Warning: 'deck diff' is DEPRECATED and will be removed in a future version. Use 'deck gateway diff' instead.
+updating service svc1  {
    "connect_timeout": 60000,
    "enabled": true,
    "host": "[masked]",
@@ -37,7 +38,8 @@ Summary:
   Deleted: 0
 `
 
-	expectedOutputUnMasked = `updating service svc1  {
+	expectedOutputUnMasked = `Warning: 'deck diff' is DEPRECATED and will be removed in a future version. Use 'deck gateway diff' instead.
+updating service svc1  {
    "connect_timeout": 60000,
    "enabled": true,
    "host": "mockbin.org",
@@ -68,7 +70,8 @@ Summary:
 		"DECK_FOO":           "foo_test", // unused, partial match
 	}
 
-	expectedOutputUnMaskedJSON = `{
+	expectedOutputUnMaskedJSON = `Warning: 'deck diff' is DEPRECATED and will be removed in a future version. Use 'deck gateway diff' instead.
+{
 	"changes": {
 		"creating": [
 			{
@@ -164,7 +167,8 @@ Summary:
 
 `
 
-	expectedOutputMaskedJSON = `{
+	expectedOutputMaskedJSON = `Warning: 'deck diff' is DEPRECATED and will be removed in a future version. Use 'deck gateway diff' instead.
+{
 	"changes": {
 		"creating": [
 			{
@@ -264,7 +268,8 @@ Summary:
 
 `
 
-	expectedOutputUnMaskedJSON30x = `{
+	expectedOutputUnMaskedJSON30x = `Warning: 'deck diff' is DEPRECATED and will be removed in a future version. Use 'deck gateway diff' instead.
+{
 	"changes": {
 		"creating": [
 			{
@@ -358,7 +363,8 @@ Summary:
 
 `
 
-	expectedOutputMaskedJSON30x = `{
+	expectedOutputMaskedJSON30x = `Warning: 'deck diff' is DEPRECATED and will be removed in a future version. Use 'deck gateway diff' instead.
+{
 	"changes": {
 		"creating": [
 			{
diff --git a/tests/integration/test_utils.go b/tests/integration/test_utils.go
index a72829a14..721247174 100644
--- a/tests/integration/test_utils.go
+++ b/tests/integration/test_utils.go
@@ -215,7 +215,7 @@ func testKongState(t *testing.T, client *kong.Client, isKonnect bool,
 
 func reset(t *testing.T, opts ...string) {
 	deckCmd := cmd.NewRootCmd()
-	args := []string{"gateway", "reset", "--force"}
+	args := []string{"reset", "--force"}
 	if len(opts) > 0 {
 		args = append(args, opts...)
 	}
@@ -248,7 +248,7 @@ func setup(t *testing.T) {
 
 func sync(kongFile string, opts ...string) error {
 	deckCmd := cmd.NewRootCmd()
-	args := []string{"gateway", "sync", kongFile}
+	args := []string{"sync", "-s", kongFile}
 	if len(opts) > 0 {
 		args = append(args, opts...)
 	}
@@ -258,7 +258,7 @@ func sync(kongFile string, opts ...string) error {
 
 func diff(kongFile string, opts ...string) (string, error) {
 	deckCmd := cmd.NewRootCmd()
-	args := []string{"gateway", "diff", kongFile}
+	args := []string{"diff", "-s", kongFile}
 	if len(opts) > 0 {
 		args = append(args, opts...)
 	}
@@ -280,7 +280,7 @@ func diff(kongFile string, opts ...string) (string, error) {
 
 func dump(opts ...string) (string, error) {
 	deckCmd := cmd.NewRootCmd()
-	args := []string{"gateway", "dump", "-o=kong"}
+	args := []string{"dump"}
 	if len(opts) > 0 {
 		args = append(args, opts...)
 	}
@@ -324,7 +324,7 @@ func lint(opts ...string) (string, error) {
 
 func ping(opts ...string) error {
 	deckCmd := cmd.NewRootCmd()
-	args := []string{"gateway", "ping"}
+	args := []string{"ping"}
 	if len(opts) > 0 {
 		args = append(args, opts...)
 	}