diff --git a/dao/workflowTemplate.go b/dao/workflowTemplate.go
index 24ed285..9ec6c8b 100644
--- a/dao/workflowTemplate.go
+++ b/dao/workflowTemplate.go
@@ -25,8 +25,9 @@ func WorkflowTemplateGet(id string) (*model.GetWorkflowTemplate, error) {
 	}
 
 	return &model.GetWorkflowTemplate{
-		Name: workflowTemplate.Name,
-		Data: workflowTemplate.Data,
+		SpecVersion: workflowTemplate.SpecVersion,
+		Name:        workflowTemplate.Name,
+		Data:        workflowTemplate.Data,
 	}, nil
 }
 
diff --git a/lib/airflow/example/workflow_template/migrate_infra_workflow.json b/lib/airflow/example/workflow_template/migrate_infra_workflow.json
index 5654e6d..b338b92 100644
--- a/lib/airflow/example/workflow_template/migrate_infra_workflow.json
+++ b/lib/airflow/example/workflow_template/migrate_infra_workflow.json
@@ -1,4 +1,5 @@
 {
+  "spec_version": "1.0",
   "name": "migrate_infra_workflow",
   "data": {
     "description": "Migrate Server",
diff --git a/pkg/api/rest/controller/workflow.go b/pkg/api/rest/controller/workflow.go
index c07a2c3..e6fa2ce 100644
--- a/pkg/api/rest/controller/workflow.go
+++ b/pkg/api/rest/controller/workflow.go
@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"reflect"
 	"strconv"
+	"strings"
 	"time"
 
 	"github.com/cloud-barista/cm-cicada/dao"
@@ -42,54 +43,78 @@ func toTimeHookFunc() mapstructure.DecodeHookFunc {
 	}
 }
 
-func createDataReqToData(createDataReq model.CreateDataReq) (model.Data, error) {
-	var taskGroups []model.TaskGroup
-	var allTasks []model.Task
+func createDataReqToData(specVersion string, createDataReq model.CreateDataReq) (model.Data, error) {
+	specVersionSpilit := strings.Split(specVersion, ".")
+	if len(specVersionSpilit) != 2 {
+		return model.Data{}, errors.New("invalid workflow spec version: " + specVersion)
+	}
 
-	for _, tgReq := range createDataReq.TaskGroups {
-		var tasks []model.Task
-		for _, tReq := range tgReq.Tasks {
-			tasks = append(tasks, model.Task{
-				ID:            uuid.New().String(),
-				Name:          tReq.Name,
-				TaskComponent: tReq.TaskComponent,
-				RequestBody:   tReq.RequestBody,
-				PathParams:    tReq.PathParams,
-				Dependencies:  tReq.Dependencies,
-			})
-		}
+	specVersionMajor, err := strconv.Atoi(specVersionSpilit[0])
+	if err != nil {
+		return model.Data{}, errors.New("invalid workflow spec version: " + specVersion)
+	}
 
-		allTasks = append(allTasks, tasks...)
-		taskGroups = append(taskGroups, model.TaskGroup{
-			ID:          uuid.New().String(),
-			Name:        tgReq.Name,
-			Description: tgReq.Description,
-			Tasks:       tasks,
-		})
+	specVersionMinor, err := strconv.Atoi(specVersionSpilit[1])
+	if err != nil {
+		return model.Data{}, errors.New("invalid workflow spec version: " + specVersion)
 	}
 
-	for i, tgReq := range createDataReq.TaskGroups {
-		for j, tg := range taskGroups {
-			if tgReq.Name == tg.Name {
-				if i == j {
-					continue
+	var taskGroups []model.TaskGroup
+	var allTasks []model.Task
+
+	if specVersionMajor > 0 && specVersionMajor <= 1 {
+		if specVersionMinor == 0 {
+			// v1.0
+			for _, tgReq := range createDataReq.TaskGroups {
+				var tasks []model.Task
+				for _, tReq := range tgReq.Tasks {
+					tasks = append(tasks, model.Task{
+						ID:            uuid.New().String(),
+						Name:          tReq.Name,
+						TaskComponent: tReq.TaskComponent,
+						RequestBody:   tReq.RequestBody,
+						PathParams:    tReq.PathParams,
+						Dependencies:  tReq.Dependencies,
+					})
 				}
 
-				return model.Data{}, errors.New("Duplicated task group name: " + tg.Name)
+				allTasks = append(allTasks, tasks...)
+				taskGroups = append(taskGroups, model.TaskGroup{
+					ID:          uuid.New().String(),
+					Name:        tgReq.Name,
+					Description: tgReq.Description,
+					Tasks:       tasks,
+				})
 			}
-		}
-	}
 
-	for i, tCheck := range allTasks {
-		for j, t := range allTasks {
-			if tCheck.Name == t.Name {
-				if i == j {
-					continue
+			for i, tgReq := range createDataReq.TaskGroups {
+				for j, tg := range taskGroups {
+					if tgReq.Name == tg.Name {
+						if i == j {
+							continue
+						}
+
+						return model.Data{}, errors.New("Duplicated task group name: " + tg.Name)
+					}
 				}
+			}
+
+			for i, tCheck := range allTasks {
+				for j, t := range allTasks {
+					if tCheck.Name == t.Name {
+						if i == j {
+							continue
+						}
 
-				return model.Data{}, errors.New("Duplicated task name: " + t.Name)
+						return model.Data{}, errors.New("Duplicated task name: " + t.Name)
+					}
+				}
 			}
+		} else {
+			return model.Data{}, errors.New("Unsupported workflow spec version: " + specVersion)
 		}
+	} else {
+		return model.Data{}, errors.New("Unsupported workflow spec version: " + specVersion)
 	}
 
 	return model.Data{
@@ -138,13 +163,19 @@ func CreateWorkflow(c echo.Context) error {
 		return common.ReturnErrorMsg(c, "Please provide the name.")
 	}
 
-	workflowData, err := createDataReqToData(createWorkflowReq.Data)
+	var specVersion = model.WorkflowSpecVersion_LATEST
+	if createWorkflowReq.SpecVersion != "" {
+		specVersion = createWorkflowReq.SpecVersion
+	}
+
+	workflowData, err := createDataReqToData(specVersion, createWorkflowReq.Data)
 	if err != nil {
 		return common.ReturnErrorMsg(c, err.Error())
 	}
 
 	var workflow model.Workflow
 	workflow.ID = uuid.New().String()
+	workflow.SpecVersion = specVersion
 	workflow.Name = createWorkflowReq.Name
 	workflow.Data = workflowData
 
@@ -418,7 +449,12 @@ func UpdateWorkflow(c echo.Context) error {
 		oldWorkflow.Name = updateWorkflowReq.Name
 	}
 
-	workflowData, err := createDataReqToData(updateWorkflowReq.Data)
+	var specVersion = model.WorkflowSpecVersion_LATEST
+	if updateWorkflowReq.SpecVersion != "" {
+		specVersion = updateWorkflowReq.SpecVersion
+	}
+
+	workflowData, err := createDataReqToData(specVersion, updateWorkflowReq.Data)
 	if err != nil {
 		return common.ReturnErrorMsg(c, err.Error())
 	}
diff --git a/pkg/api/rest/controller/workflowTemplate.go b/pkg/api/rest/controller/workflowTemplate.go
index 8b76fbb..501a164 100644
--- a/pkg/api/rest/controller/workflowTemplate.go
+++ b/pkg/api/rest/controller/workflowTemplate.go
@@ -58,8 +58,9 @@ func GetWorkflowTemplateByName(c echo.Context) error {
 		return common.ReturnErrorMsg(c, "workflow template not found with the provided name")
 	}
 	return c.JSONPretty(http.StatusOK, model.GetWorkflowTemplate{
-		Name: workflowTemplate.Name,
-		Data: workflowTemplate.Data,
+		SpecVersion: workflowTemplate.SpecVersion,
+		Name:        workflowTemplate.Name,
+		Data:        workflowTemplate.Data,
 	}, "")
 }
 
diff --git a/pkg/api/rest/docs/docs.go b/pkg/api/rest/docs/docs.go
index 0b8a1e1..183e0e5 100644
--- a/pkg/api/rest/docs/docs.go
+++ b/pkg/api/rest/docs/docs.go
@@ -1805,6 +1805,9 @@ const docTemplate = `{
                 },
                 "name": {
                     "type": "string"
+                },
+                "spec_version": {
+                    "type": "string"
                 }
             }
         },
@@ -1858,7 +1861,8 @@ const docTemplate = `{
             "type": "object",
             "required": [
                 "data",
-                "name"
+                "name",
+                "spec_version"
             ],
             "properties": {
                 "data": {
@@ -1866,6 +1870,9 @@ const docTemplate = `{
                 },
                 "name": {
                     "type": "string"
+                },
+                "spec_version": {
+                    "type": "string"
                 }
             }
         },
@@ -2173,7 +2180,8 @@ const docTemplate = `{
             "required": [
                 "data",
                 "id",
-                "name"
+                "name",
+                "spec_version"
             ],
             "properties": {
                 "created_at": {
@@ -2188,6 +2196,9 @@ const docTemplate = `{
                 "name": {
                     "type": "string"
                 },
+                "spec_version": {
+                    "type": "string"
+                },
                 "updated_at": {
                     "type": "string"
                 }
@@ -2249,7 +2260,8 @@ const docTemplate = `{
             "required": [
                 "data",
                 "id",
-                "name"
+                "name",
+                "spec_version"
             ],
             "properties": {
                 "data": {
@@ -2260,6 +2272,9 @@ const docTemplate = `{
                 },
                 "name": {
                     "type": "string"
+                },
+                "spec_version": {
+                    "type": "string"
                 }
             }
         },
@@ -2268,6 +2283,7 @@ const docTemplate = `{
             "required": [
                 "action",
                 "id",
+                "spec_version",
                 "workflowId"
             ],
             "properties": {
@@ -2283,6 +2299,9 @@ const docTemplate = `{
                 "id": {
                     "type": "string"
                 },
+                "spec_version": {
+                    "type": "string"
+                },
                 "workflowId": {
                     "type": "string"
                 }
diff --git a/pkg/api/rest/docs/swagger.json b/pkg/api/rest/docs/swagger.json
index 134708f..a417709 100644
--- a/pkg/api/rest/docs/swagger.json
+++ b/pkg/api/rest/docs/swagger.json
@@ -1798,6 +1798,9 @@
                 },
                 "name": {
                     "type": "string"
+                },
+                "spec_version": {
+                    "type": "string"
                 }
             }
         },
@@ -1851,7 +1854,8 @@
             "type": "object",
             "required": [
                 "data",
-                "name"
+                "name",
+                "spec_version"
             ],
             "properties": {
                 "data": {
@@ -1859,6 +1863,9 @@
                 },
                 "name": {
                     "type": "string"
+                },
+                "spec_version": {
+                    "type": "string"
                 }
             }
         },
@@ -2166,7 +2173,8 @@
             "required": [
                 "data",
                 "id",
-                "name"
+                "name",
+                "spec_version"
             ],
             "properties": {
                 "created_at": {
@@ -2181,6 +2189,9 @@
                 "name": {
                     "type": "string"
                 },
+                "spec_version": {
+                    "type": "string"
+                },
                 "updated_at": {
                     "type": "string"
                 }
@@ -2242,7 +2253,8 @@
             "required": [
                 "data",
                 "id",
-                "name"
+                "name",
+                "spec_version"
             ],
             "properties": {
                 "data": {
@@ -2253,6 +2265,9 @@
                 },
                 "name": {
                     "type": "string"
+                },
+                "spec_version": {
+                    "type": "string"
                 }
             }
         },
@@ -2261,6 +2276,7 @@
             "required": [
                 "action",
                 "id",
+                "spec_version",
                 "workflowId"
             ],
             "properties": {
@@ -2276,6 +2292,9 @@
                 "id": {
                     "type": "string"
                 },
+                "spec_version": {
+                    "type": "string"
+                },
                 "workflowId": {
                     "type": "string"
                 }
diff --git a/pkg/api/rest/docs/swagger.yaml b/pkg/api/rest/docs/swagger.yaml
index 149db97..8d9e443 100644
--- a/pkg/api/rest/docs/swagger.yaml
+++ b/pkg/api/rest/docs/swagger.yaml
@@ -99,6 +99,8 @@ definitions:
         $ref: '#/definitions/github_com_cloud-barista_cm-cicada_pkg_api_rest_model.CreateDataReq'
       name:
         type: string
+      spec_version:
+        type: string
     required:
     - data
     - name
@@ -139,9 +141,12 @@ definitions:
         $ref: '#/definitions/github_com_cloud-barista_cm-cicada_pkg_api_rest_model.CreateDataReq'
       name:
         type: string
+      spec_version:
+        type: string
     required:
     - data
     - name
+    - spec_version
     type: object
   github_com_cloud-barista_cm-cicada_pkg_api_rest_model.ParameterStructure:
     properties:
@@ -355,12 +360,15 @@ definitions:
         type: string
       name:
         type: string
+      spec_version:
+        type: string
       updated_at:
         type: string
     required:
     - data
     - id
     - name
+    - spec_version
     type: object
   github_com_cloud-barista_cm-cicada_pkg_api_rest_model.WorkflowRun:
     properties:
@@ -404,10 +412,13 @@ definitions:
         type: string
       name:
         type: string
+      spec_version:
+        type: string
     required:
     - data
     - id
     - name
+    - spec_version
     type: object
   github_com_cloud-barista_cm-cicada_pkg_api_rest_model.WorkflowVersion:
     properties:
@@ -419,11 +430,14 @@ definitions:
         $ref: '#/definitions/github_com_cloud-barista_cm-cicada_pkg_api_rest_model.Workflow'
       id:
         type: string
+      spec_version:
+        type: string
       workflowId:
         type: string
     required:
     - action
     - id
+    - spec_version
     - workflowId
     type: object
 info:
diff --git a/pkg/api/rest/model/workflow.go b/pkg/api/rest/model/workflow.go
index c03b359..0c50c8d 100644
--- a/pkg/api/rest/model/workflow.go
+++ b/pkg/api/rest/model/workflow.go
@@ -9,6 +9,14 @@ import (
 	"gorm.io/gorm"
 )
 
+const (
+	WorkflowSpecVersion_1_0 = "1.0"
+)
+
+const (
+	WorkflowSpecVersion_LATEST = WorkflowSpecVersion_1_0
+)
+
 type Task struct {
 	ID            string                 `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
 	Name          string                 `json:"name" mapstructure:"name" validate:"required"`
@@ -84,24 +92,27 @@ type CreateDataReq struct {
 }
 
 type Workflow struct {
-	ID        string    `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
-	Name      string    `gorm:"index:,column:name,unique;type:text collate nocase" json:"name" mapstructure:"name" validate:"required"`
-	Data      Data      `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
-	CreatedAt time.Time `gorm:"column:created_at;autoCreateTime:false" json:"created_at" mapstructure:"created_at"`
-	UpdatedAt time.Time `gorm:"column:updated_at;autoCreateTime:false" json:"updated_at" mapstructure:"updated_at"`
+	ID          string    `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
+	SpecVersion string    `gorm:"column:spec_version" json:"spec_version" mapstructure:"spec_version" validate:"required"`
+	Name        string    `gorm:"index:,column:name,unique;type:text collate nocase" json:"name" mapstructure:"name" validate:"required"`
+	Data        Data      `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
+	CreatedAt   time.Time `gorm:"column:created_at;autoCreateTime:false" json:"created_at" mapstructure:"created_at"`
+	UpdatedAt   time.Time `gorm:"column:updated_at;autoCreateTime:false" json:"updated_at" mapstructure:"updated_at"`
 }
 
 type WorkflowVersion struct {
-	ID         string    `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
-	WorkflowID string    `gorm:"column:workflowId" json:"workflowId" mapstructure:"workflowId" validate:"required"`
-	Data       Workflow  `gorm:"column:data" json:"data" mapstructure:"data"`
-	Action     string    `gorm:"column:action" json:"action" mapstructure:"action" validate:"required"`
-	CreatedAt  time.Time `gorm:"column:created_at" json:"created_at" mapstructure:"created_at"`
+	ID          string    `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
+	SpecVersion string    `gorm:"column:spec_version" json:"spec_version" mapstructure:"spec_version" validate:"required"`
+	WorkflowID  string    `gorm:"column:workflowId" json:"workflowId" mapstructure:"workflowId" validate:"required"`
+	Data        Workflow  `gorm:"column:data" json:"data" mapstructure:"data"`
+	Action      string    `gorm:"column:action" json:"action" mapstructure:"action" validate:"required"`
+	CreatedAt   time.Time `gorm:"column:created_at" json:"created_at" mapstructure:"created_at"`
 }
 
 type CreateWorkflowReq struct {
-	Name string        `gorm:"column:name" json:"name" mapstructure:"name" validate:"required"`
-	Data CreateDataReq `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
+	SpecVersion string        `json:"spec_version" mapstructure:"spec_version"`
+	Name        string        `json:"name" mapstructure:"name" validate:"required"`
+	Data        CreateDataReq `json:"data" mapstructure:"data" validate:"required"`
 }
 
 type WorkflowRun struct {
diff --git a/pkg/api/rest/model/workflowTemplate.go b/pkg/api/rest/model/workflowTemplate.go
index 38846ad..991acca 100644
--- a/pkg/api/rest/model/workflowTemplate.go
+++ b/pkg/api/rest/model/workflowTemplate.go
@@ -1,12 +1,14 @@
 package model
 
 type GetWorkflowTemplate struct {
-	Name string        `gorm:"index:,column:name,unique;type:text collate nocase" json:"name" mapstructure:"name" validate:"required"`
-	Data CreateDataReq `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
+	SpecVersion string        `gorm:"column:spec_version" json:"spec_version" mapstructure:"spec_version" validate:"required"`
+	Name        string        `gorm:"index:,column:name,unique;type:text collate nocase" json:"name" mapstructure:"name" validate:"required"`
+	Data        CreateDataReq `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
 }
 
 type WorkflowTemplate struct {
-	ID   string        `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
-	Name string        `gorm:"index:,column:name,unique;type:text collate nocase" json:"name" mapstructure:"name" validate:"required"`
-	Data CreateDataReq `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
+	ID          string        `gorm:"primaryKey" json:"id" mapstructure:"id" validate:"required"`
+	SpecVersion string        `gorm:"column:spec_version" json:"spec_version" mapstructure:"spec_version" validate:"required"`
+	Name        string        `gorm:"index:,column:name,unique;type:text collate nocase" json:"name" mapstructure:"name" validate:"required"`
+	Data        CreateDataReq `gorm:"column:data" json:"data" mapstructure:"data" validate:"required"`
 }