diff --git a/backend/core/models/domainlayer/crossdomain/account.go b/backend/core/models/domainlayer/crossdomain/account.go
index eba65fd6303..e8ae63a1ebd 100644
--- a/backend/core/models/domainlayer/crossdomain/account.go
+++ b/backend/core/models/domainlayer/crossdomain/account.go
@@ -18,8 +18,9 @@ limitations under the License.
 package crossdomain
 
 import (
-	"github.com/apache/incubator-devlake/core/models/domainlayer"
 	"time"
+
+	"github.com/apache/incubator-devlake/core/models/domainlayer"
 )
 
 type Account struct {
@@ -31,6 +32,7 @@ type Account struct {
 	Organization string `gorm:"type:varchar(255)"`
 	CreatedDate  *time.Time
 	Status       int
+	IsBot        bool `gorm:"default:false"`
 }
 
 func (Account) TableName() string {
diff --git a/backend/core/models/migrationscripts/20260720_add_is_bot_to_accounts.go b/backend/core/models/migrationscripts/20260720_add_is_bot_to_accounts.go
new file mode 100644
index 00000000000..47b53660c36
--- /dev/null
+++ b/backend/core/models/migrationscripts/20260720_add_is_bot_to_accounts.go
@@ -0,0 +1,35 @@
+package migrationscripts
+
+import (
+	"github.com/apache/incubator-devlake/core/context"
+	"github.com/apache/incubator-devlake/core/errors"
+	"github.com/apache/incubator-devlake/core/plugin"
+)
+
+var _ plugin.MigrationScript = (*addIsBotToAccounts)(nil)
+
+type account20260720 struct {
+	IsBot bool `gorm:"default:false"`
+}
+
+func (account20260720) TableName() string {
+	return "accounts"
+}
+
+type addIsBotToAccounts struct{}
+
+func (*addIsBotToAccounts) Up(basicRes context.BasicRes) errors.Error {
+	db := basicRes.GetDal()
+	if err := db.AutoMigrate(&account20260720{}); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (*addIsBotToAccounts) Version() uint64 {
+	return 20260720120000
+}
+
+func (*addIsBotToAccounts) Name() string {
+	return "add is_bot to accounts so bot/automation activity can be excluded from metrics, according to #8974"
+}
diff --git a/backend/core/models/migrationscripts/register.go b/backend/core/models/migrationscripts/register.go
index e25363a1b40..9099b32a235 100644
--- a/backend/core/models/migrationscripts/register.go
+++ b/backend/core/models/migrationscripts/register.go
@@ -148,5 +148,6 @@ func All() []plugin.MigrationScript {
 		new(changeIssueComponentToText),
 		new(changeCqIssueCodeBlocksComponentToText),
 		new(addCqProjectMetricsHistory),
+		new(addIsBotToAccounts),
 	}
 }
diff --git a/backend/plugins/dora/tasks/change_lead_time_calculator.go b/backend/plugins/dora/tasks/change_lead_time_calculator.go
index 9861a5c7a9e..57e5b730968 100644
--- a/backend/plugins/dora/tasks/change_lead_time_calculator.go
+++ b/backend/plugins/dora/tasks/change_lead_time_calculator.go
@@ -248,7 +248,9 @@ func batchFetchFirstReviews(projectName string, db dal.Dal) (map[string]*code.Pu
 			SELECT prc2.pull_request_id, MIN(prc2.created_date) as min_date
 			FROM pull_request_comments prc2
 			INNER JOIN pull_requests pr2 ON pr2.id = prc2.pull_request_id
+			LEFT JOIN accounts acc2 ON acc2.id = prc2.account_id
 			WHERE (pr2.author_id IS NULL OR pr2.author_id = '' OR prc2.account_id != pr2.author_id)
+			AND COALESCE(acc2.is_bot, false) = false
 			GROUP BY prc2.pull_request_id
 		) first_reviews ON prc.pull_request_id = first_reviews.pull_request_id
 		AND prc.created_date = first_reviews.min_date`),
diff --git a/backend/plugins/github/tasks/account_convertor.go b/backend/plugins/github/tasks/account_convertor.go
index 3d4db97d155..310780fc7f6 100644
--- a/backend/plugins/github/tasks/account_convertor.go
+++ b/backend/plugins/github/tasks/account_convertor.go
@@ -41,6 +41,7 @@ type repoAccountForConvert struct {
 	Name      string
 	Email     string
 	AvatarUrl string
+	Type      string
 	common.NoPKModel
 }
 
@@ -96,6 +97,7 @@ func ConvertAccounts(taskCtx plugin.SubTaskContext) errors.Error {
 					COALESCE(ga.name, '') AS name,
 					COALESCE(ga.email, '') AS email,
 					COALESCE(ga.avatar_url, '') AS avatar_url,
+					COALESCE(ga.type, '') AS type,
 					COALESCE(ga._raw_data_params, _tool_github_repo_accounts._raw_data_params) AS _raw_data_params,
 					COALESCE(ga._raw_data_table, _tool_github_repo_accounts._raw_data_table) AS _raw_data_table,
 					COALESCE(ga._raw_data_id, _tool_github_repo_accounts._raw_data_id) AS _raw_data_id,
@@ -145,6 +147,7 @@ func ConvertAccounts(taskCtx plugin.SubTaskContext) errors.Error {
 					orgStr = orgStr[:255]
 				}
 			}
+			isBot := githubUser.Type == "Bot" || strings.HasSuffix(githubUser.Login, "[bot]")
 
 			domainUser := &crossdomain.Account{
 				DomainEntity: domainlayer.DomainEntity{Id: accountIdGen.Generate(data.Options.ConnectionId, githubUser.Id)},
@@ -153,6 +156,7 @@ func ConvertAccounts(taskCtx plugin.SubTaskContext) errors.Error {
 				UserName:     githubUser.Login,
 				AvatarUrl:    githubUser.AvatarUrl,
 				Organization: orgStr,
+				IsBot:        isBot,
 			}
 			return []interface{}{
 				domainUser,