diff --git a/models/forgejo_migrations/migrate.go b/models/forgejo_migrations/migrate.go
index 6a6922ec4e..737350b019 100644
--- a/models/forgejo_migrations/migrate.go
+++ b/models/forgejo_migrations/migrate.go
@@ -107,6 +107,8 @@ var migrations = []*Migration{
 	NewMigration("Add federated user activity tables, update the `federated_user` table & add indexes", FederatedUserActivityMigration),
 	// v33 -> v34
 	NewMigration("Add `notify-email` column to `action_run` table", AddNotifyEmailToActionRun),
+	// v34 -> v35
+	NewMigration("Add index to `stopped` column in `action_run` table", AddIndexToActionRunStopped),
 }
 
 // GetCurrentDBVersion returns the current Forgejo database version.
diff --git a/models/forgejo_migrations/v35.go b/models/forgejo_migrations/v35.go
new file mode 100644
index 0000000000..0fb3b43e2c
--- /dev/null
+++ b/models/forgejo_migrations/v35.go
@@ -0,0 +1,19 @@
+// Copyright 2025 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package forgejo_migrations //nolint:revive
+
+import (
+	"forgejo.org/modules/timeutil"
+
+	"xorm.io/xorm"
+)
+
+func AddIndexToActionRunStopped(x *xorm.Engine) error {
+	type ActionRun struct {
+		ID      int64
+		Stopped timeutil.TimeStamp `xorm:"index"`
+	}
+
+	return x.Sync(&ActionRun{})
+}