diff --git a/docs/data-sources/stack.md b/docs/data-sources/stack.md
index 846e4a80..ad9aa9c8 100644
--- a/docs/data-sources/stack.md
+++ b/docs/data-sources/stack.md
@@ -153,6 +153,7 @@ Read-Only:
 Read-Only:
 
 - `kubectl_version` (String)
+- `kubernetes_workflow_tool` (String)
 - `namespace` (String)
 
 
diff --git a/docs/data-sources/stacks.md b/docs/data-sources/stacks.md
index e5d4ba60..fd8f20bb 100644
--- a/docs/data-sources/stacks.md
+++ b/docs/data-sources/stacks.md
@@ -250,6 +250,7 @@ Read-Only:
 Read-Only:
 
 - `kubectl_version` (String)
+- `kubernetes_workflow_tool` (String)
 - `namespace` (String)
 
 
diff --git a/docs/resources/stack.md b/docs/resources/stack.md
index 5e0fdb59..c12b35a7 100644
--- a/docs/resources/stack.md
+++ b/docs/resources/stack.md
@@ -367,6 +367,7 @@ Read-Only:
 Optional:
 
 - `kubectl_version` (String) Kubectl version.
+- `kubernetes_workflow_tool` (String) Defines the tool that will be used to execute the workflow. This can be one of `KUBERNETES` or `CUSTOM`. Defaults to `KUBERNETES`.
 - `namespace` (String) Namespace of the Kubernetes cluster to run commands on. Leave empty for multi-namespace Stacks.
 
 
diff --git a/spacelift/data_stack.go b/spacelift/data_stack.go
index 75e0b74f..7c4c86ed 100644
--- a/spacelift/data_stack.go
+++ b/spacelift/data_stack.go
@@ -322,6 +322,11 @@ func dataStack() *schema.Resource {
 							Description: "Kubectl version.",
 							Computed:    true,
 						},
+						"kubernetes_workflow_tool": {
+							Type:             schema.TypeString,
+							Description: "Defines the tool that will be used to execute the workflow. This can be one of `KUBERNETES` or `CUSTOM`. Defaults to `KUBERNETES`.",
+							Computed:         true,
+						},
 					},
 				},
 			},
diff --git a/spacelift/data_stack_test.go b/spacelift/data_stack_test.go
index 5688e6e4..90238e07 100644
--- a/spacelift/data_stack_test.go
+++ b/spacelift/data_stack_test.go
@@ -190,6 +190,7 @@ func TestStackData(t *testing.T) {
 			Check: Resource(
 				"data.spacelift_stack.test",
 				Attribute("kubernetes.0.kubectl_version", IsNotEmpty()),
+				Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("KUBERNETES")),
 			),
 		}})
 	})
@@ -214,6 +215,31 @@ func TestStackData(t *testing.T) {
 			Check: Resource(
 				"data.spacelift_stack.test",
 				Attribute("kubernetes.0.kubectl_version", Equals("1.2.3")),
+				Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("KUBERNETES")),
+			),
+		}})
+	})
+
+	t.Run("with Kubernetes stack with a kubernetes workflow tool", func(t *testing.T) {
+		randomID := acctest.RandStringFromCharSet(5, acctest.CharSetAlphaNum)
+
+		testSteps(t, []resource.TestStep{{
+			Config: fmt.Sprintf(`
+			resource "spacelift_stack" "test" {
+				branch              = "master"
+				name                = "Test stack %s"
+				repository          = "demo"
+				kubernetes {
+					kubernetes_workflow_tool = "CUSTOM"
+				}
+			}
+			data "spacelift_stack" "test" {
+				stack_id = spacelift_stack.test.id
+			}
+		`, randomID),
+			Check: Resource(
+				"data.spacelift_stack.test",
+				Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("CUSTOM")),
 			),
 		}})
 	})
diff --git a/spacelift/internal/structs/stack.go b/spacelift/internal/structs/stack.go
index 4d9f7b14..c892d8a8 100644
--- a/spacelift/internal/structs/stack.go
+++ b/spacelift/internal/structs/stack.go
@@ -80,6 +80,7 @@ type Stack struct {
 		Kubernetes struct {
 			Namespace      string  `graphql:"namespace"`
 			KubectlVersion *string `graphql:"kubectlVersion"`
+			KubernetesWorkflowTool *string `graphql:"kubernetesWorkflowTool"`
 		} `graphql:"... on StackConfigVendorKubernetes"`
 		Pulumi struct {
 			LoginURL  string `graphql:"loginURL"`
@@ -136,6 +137,7 @@ func (s *Stack) IaCSettings() (string, map[string]interface{}) {
 		return "kubernetes", map[string]interface{}{
 			"namespace":       s.VendorConfig.Kubernetes.Namespace,
 			"kubectl_version": s.VendorConfig.Kubernetes.KubectlVersion,
+			"kubernetes_workflow_tool": s.VendorConfig.Kubernetes.KubernetesWorkflowTool,
 		}
 	case StackConfigVendorPulumi:
 		return "pulumi", map[string]interface{}{
@@ -281,6 +283,7 @@ func PopulateStack(d *schema.ResourceData, stack *Stack) error {
 		m := map[string]interface{}{
 			"namespace":       stack.VendorConfig.Kubernetes.Namespace,
 			"kubectl_version": stack.VendorConfig.Kubernetes.KubectlVersion,
+			"kubernetes_workflow_tool": stack.VendorConfig.Kubernetes.KubernetesWorkflowTool,
 		}
 
 		d.Set("kubernetes", []interface{}{m})
diff --git a/spacelift/internal/structs/stack_input.go b/spacelift/internal/structs/stack_input.go
index 30a2f2e8..64cceddc 100644
--- a/spacelift/internal/structs/stack_input.go
+++ b/spacelift/internal/structs/stack_input.go
@@ -66,6 +66,7 @@ type CloudFormationInput struct {
 type KubernetesInput struct {
 	Namespace      graphql.String  `json:"namespace"`
 	KubectlVersion *graphql.String `json:"kubectlVersion"`
+	KubernetesWorkflowTool *graphql.String `json:"kubernetesWorkflowTool"`
 }
 
 // PulumiInput represents Pulumi-specific configuration.
diff --git a/spacelift/resource_stack.go b/spacelift/resource_stack.go
index bc8c3dfb..e95d9966 100644
--- a/spacelift/resource_stack.go
+++ b/spacelift/resource_stack.go
@@ -458,6 +458,13 @@ func resourceStack() *schema.Resource {
 							Computed:         true,
 							ValidateDiagFunc: validations.DisallowEmptyString,
 						},
+						"kubernetes_workflow_tool": {
+							Type:             schema.TypeString,
+							Description: "Defines the tool that will be used to execute the workflow. This can be one of `KUBERNETES` or `CUSTOM`. Defaults to `KUBERNETES`.",
+							Optional:         true,
+							Computed:         true,
+							ValidateDiagFunc: validations.DisallowEmptyString,
+						},
 					},
 				},
 			},
@@ -961,6 +968,9 @@ func getVendorConfig(d *schema.ResourceData) *structs.VendorConfigInput {
 			if s := toOptionalString(kubernetesSettings["kubectl_version"]); *s != "" {
 				vendorConfig.Kubernetes.KubectlVersion = s
 			}
+			if s := toOptionalString(kubernetesSettings["kubernetes_workflow_tool"]); *s != "" {
+				vendorConfig.Kubernetes.KubernetesWorkflowTool = s
+			}
 		}
 		return vendorConfig
 	}
diff --git a/spacelift/resource_stack_test.go b/spacelift/resource_stack_test.go
index da9194c2..d3cf1c2d 100644
--- a/spacelift/resource_stack_test.go
+++ b/spacelift/resource_stack_test.go
@@ -484,7 +484,7 @@ func TestStackResource(t *testing.T) {
 		})
 	})
 
-	t.Run("with GitHub and Kubernetes configuration", func(t *testing.T) {
+	t.Run("with GitHub and Kubernetes (default tool) configuration", func(t *testing.T) {
 		testSteps(t, []resource.TestStep{
 			{
 				Config: getConfig(`kubernetes {}`),
@@ -493,6 +493,7 @@ func TestStackResource(t *testing.T) {
 					Attribute("id", StartsWith("provider-test-stack")),
 					Attribute("kubernetes.0.namespace", Equals("")),
 					Attribute("kubernetes.0.kubectl_version", IsNotEmpty()),
+					Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("KUBERNETES")),
 					Attribute("ansible.#", Equals("0")),
 					Attribute("pulumi.#", Equals("0")),
 					Attribute("cloudformation.#", Equals("0")),
@@ -508,6 +509,7 @@ func TestStackResource(t *testing.T) {
 					Attribute("id", StartsWith("provider-test-stack")),
 					Attribute("kubernetes.0.namespace", Equals("myapp-prod")),
 					Attribute("kubernetes.0.kubectl_version", IsNotEmpty()),
+					Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("KUBERNETES")),
 					Attribute("ansible.#", Equals("0")),
 					Attribute("pulumi.#", Equals("0")),
 					Attribute("cloudformation.#", Equals("0")),
@@ -522,6 +524,27 @@ func TestStackResource(t *testing.T) {
 					Attribute("id", StartsWith("provider-test-stack")),
 					Attribute("kubernetes.0.namespace", Equals("")),
 					Attribute("kubernetes.0.kubectl_version", Equals("1.2.3")),
+					Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("KUBERNETES")),
+					Attribute("ansible.#", Equals("0")),
+					Attribute("pulumi.#", Equals("0")),
+					Attribute("cloudformation.#", Equals("0")),
+				),
+			},
+		})
+	})
+
+	t.Run("with GitHub and Kubernetes (CUSTOM) configuration", func(t *testing.T) {
+		testSteps(t, []resource.TestStep{
+			{
+				Config: getConfig(`kubernetes {
+						namespace = "myapp-prod"
+						kubernetes_workflow_tool = "CUSTOM"
+					}`),
+				Check: Resource(
+					resourceName,
+					Attribute("id", StartsWith("provider-test-stack")),
+					Attribute("kubernetes.0.namespace", Equals("myapp-prod")),
+					Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("CUSTOM")),
 					Attribute("ansible.#", Equals("0")),
 					Attribute("pulumi.#", Equals("0")),
 					Attribute("cloudformation.#", Equals("0")),
@@ -1285,6 +1308,8 @@ func TestStackResourceSpace(t *testing.T) {
 					Attribute("repository", Equals("demo")),
 					Attribute("runner_image", Equals("custom_image:runner")),
 					Attribute("kubernetes.0.namespace", Equals("myapp-prod")),
+					Attribute("kubernetes.0.kubectl_version", IsNotEmpty()),
+					Attribute("kubernetes.0.kubernetes_workflow_tool", Equals("KUBERNETES")),
 					Attribute("ansible.#", Equals("0")),
 					Attribute("pulumi.#", Equals("0")),
 					Attribute("cloudformation.#", Equals("0")),