diff --git a/backend/plugins/github/models/migrationscripts/20231018_modify_tool_github_milestones.go b/backend/plugins/github/models/migrationscripts/20231018_modify_tool_github_milestones.go
new file mode 100644
index 00000000000..8be9249394e
--- /dev/null
+++ b/backend/plugins/github/models/migrationscripts/20231018_modify_tool_github_milestones.go
@@ -0,0 +1,70 @@
+/*
+Licensed to the Apache Software Foundation (ASF) under one or more
+contributor license agreements.  See the NOTICE file distributed with
+this work for additional information regarding copyright ownership.
+The ASF licenses this file to You under the Apache License, Version 2.0
+(the "License"); you may not use this file except in compliance with
+the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package migrationscripts
+
+import (
+	"time"
+
+	"github.com/apache/incubator-devlake/core/context"
+	"github.com/apache/incubator-devlake/core/errors"
+	"github.com/apache/incubator-devlake/core/models/migrationscripts/archived"
+	"github.com/apache/incubator-devlake/helpers/migrationhelper"
+	githubArchived "github.com/apache/incubator-devlake/plugins/github/models/migrationscripts/archived"
+)
+
+type modifyGithubMilestone struct{}
+
+type GithubMilestone20231018 struct {
+	ConnectionId    uint64 `gorm:"primaryKey"`
+	MilestoneId     int    `gorm:"primaryKey;autoIncrement:false"`
+	RepoId          int
+	Number          int
+	URL             string
+	Title           string
+	OpenIssues      int
+	ClosedIssues    int
+	State           string
+	GithubCreatedAt time.Time
+	GithubUpdatedAt time.Time
+	ClosedAt        *time.Time
+
+	archived.NoPKModel
+}
+
+func (GithubMilestone20231018) TableName() string {
+	return "_tool_github_milestones"
+}
+
+func (script *modifyGithubMilestone) Up(basicRes context.BasicRes) errors.Error {
+	err := basicRes.GetDal().DropTables(&githubArchived.GithubMilestone{})
+	if err != nil {
+		return err
+	}
+	return migrationhelper.AutoMigrateTables(
+		basicRes,
+		&GithubMilestone20231018{},
+	)
+}
+
+func (*modifyGithubMilestone) Version() uint64 {
+	return 20231018122537
+}
+
+func (*modifyGithubMilestone) Name() string {
+	return "modify _tool_github_milestones table created_at and updated_at"
+}
diff --git a/backend/plugins/github/models/migrationscripts/register.go b/backend/plugins/github/models/migrationscripts/register.go
index e8dc5b0df84..c101043bd43 100644
--- a/backend/plugins/github/models/migrationscripts/register.go
+++ b/backend/plugins/github/models/migrationscripts/register.go
@@ -44,5 +44,6 @@ func All() []plugin.MigrationScript {
 		new(addFullName),
 		new(addRawParamTableForScope),
 		new(addDeploymentTable),
+		new(modifyGithubMilestone),
 	}
 }
diff --git a/backend/plugins/github/models/milestone.go b/backend/plugins/github/models/milestone.go
index 4fadfca12a5..94a5aebd589 100644
--- a/backend/plugins/github/models/milestone.go
+++ b/backend/plugins/github/models/milestone.go
@@ -18,23 +18,24 @@ limitations under the License.
 package models
 
 import (
-	"github.com/apache/incubator-devlake/core/models/common"
 	"time"
+
+	"github.com/apache/incubator-devlake/core/models/common"
 )
 
 type GithubMilestone struct {
-	ConnectionId uint64 `gorm:"primaryKey"`
-	MilestoneId  int    `gorm:"primaryKey;autoIncrement:false"`
-	RepoId       int
-	Number       int
-	URL          string
-	Title        string
-	OpenIssues   int
-	ClosedIssues int
-	State        string
-	CreatedAt    time.Time
-	UpdatedAt    time.Time
-	ClosedAt     *time.Time
+	ConnectionId    uint64 `gorm:"primaryKey"`
+	MilestoneId     int    `gorm:"primaryKey;autoIncrement:false"`
+	RepoId          int
+	Number          int
+	URL             string
+	Title           string
+	OpenIssues      int
+	ClosedIssues    int
+	State           string
+	GithubCreatedAt time.Time
+	GithubUpdatedAt time.Time
+	ClosedAt        *time.Time
 	common.NoPKModel
 }
 
diff --git a/backend/plugins/github/tasks/milestone_converter.go b/backend/plugins/github/tasks/milestone_converter.go
index 8b97beee511..6d872023dd4 100644
--- a/backend/plugins/github/tasks/milestone_converter.go
+++ b/backend/plugins/github/tasks/milestone_converter.go
@@ -100,7 +100,7 @@ func ConvertMilestones(taskCtx plugin.SubTaskContext) errors.Error {
 				Name:            response.GithubMilestone.Title,
 				Url:             response.GithubMilestone.URL,
 				Status:          response.GithubMilestone.State,
-				StartedDate:     &response.GithubMilestone.CreatedAt, //GitHub doesn't give us a "start date"
+				StartedDate:     &response.GithubMilestone.GithubCreatedAt, //GitHub doesn't give us a "start date"
 				EndedDate:       response.GithubMilestone.ClosedAt,
 				CompletedDate:   response.GithubMilestone.ClosedAt,
 				OriginalBoardID: domainBoardId,
diff --git a/backend/plugins/github/tasks/milestone_extractor.go b/backend/plugins/github/tasks/milestone_extractor.go
index 28ea6006324..83e10b5cd99 100644
--- a/backend/plugins/github/tasks/milestone_extractor.go
+++ b/backend/plugins/github/tasks/milestone_extractor.go
@@ -110,18 +110,18 @@ func ExtractMilestones(taskCtx plugin.SubTaskContext) errors.Error {
 
 func convertGithubMilestone(response *MilestonesResponse, connectionId uint64, repositoryId int) *models.GithubMilestone {
 	milestone := &models.GithubMilestone{
-		ConnectionId: connectionId,
-		MilestoneId:  response.Id,
-		RepoId:       repositoryId,
-		Number:       response.Number,
-		URL:          response.Url,
-		Title:        response.Title,
-		OpenIssues:   response.OpenIssues,
-		ClosedIssues: response.ClosedIssues,
-		State:        response.State,
-		ClosedAt:     common.Iso8601TimeToTime(response.ClosedAt),
-		CreatedAt:    response.CreatedAt.ToTime(),
-		UpdatedAt:    response.UpdatedAt.ToTime(),
+		ConnectionId:    connectionId,
+		MilestoneId:     response.Id,
+		RepoId:          repositoryId,
+		Number:          response.Number,
+		URL:             response.Url,
+		Title:           response.Title,
+		OpenIssues:      response.OpenIssues,
+		ClosedIssues:    response.ClosedIssues,
+		State:           response.State,
+		ClosedAt:        common.Iso8601TimeToTime(response.ClosedAt),
+		GithubCreatedAt: response.CreatedAt.ToTime(),
+		GithubUpdatedAt: response.UpdatedAt.ToTime(),
 	}
 	return milestone
 }