diff --git a/services/actions/clear_tasks.go b/services/actions/clear_tasks.go
index 1b871109008..f4acab10356 100644
--- a/services/actions/clear_tasks.go
+++ b/services/actions/clear_tasks.go
@@ -120,7 +120,7 @@ func stopTasks(ctx context.Context, opts actions_model.FindTaskOptions) error {
 func CancelAbandonedJobs(ctx context.Context) error {
 	jobs, err := db.Find[actions_model.ActionRunJob](ctx, actions_model.FindRunJobOptions{
 		Statuses:      []actions_model.Status{actions_model.StatusWaiting, actions_model.StatusBlocked},
-		UpdatedBefore: timeutil.TimeStamp(time.Now().Add(-setting.Actions.AbandonedJobTimeout).Unix()),
+		UpdatedBefore: timeutil.TimeStampNow().AddDuration(-setting.Actions.AbandonedJobTimeout),
 	})
 	if err != nil {
 		log.Warn("find abandoned tasks: %v", err)
diff --git a/tests/integration/actions_concurrency_test.go b/tests/integration/actions_concurrency_test.go
index c3a22cf8c15..1115b054226 100644
--- a/tests/integration/actions_concurrency_test.go
+++ b/tests/integration/actions_concurrency_test.go
@@ -16,6 +16,7 @@ import (
 	repo_model "code.gitea.io/gitea/models/repo"
 	"code.gitea.io/gitea/models/unittest"
 	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 	"code.gitea.io/gitea/modules/timeutil"
 	"code.gitea.io/gitea/modules/util"
@@ -1247,6 +1248,105 @@ jobs:
 	})
 }
 
+func TestAbandonConcurrentRun(t *testing.T) {
+	onGiteaRun(t, func(t *testing.T, u *url.URL) {
+		user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})
+		user2Session := loginUser(t, user2.Name)
+		user2Token := getTokenForLoggedInUser(t, user2Session, auth_model.AccessTokenScopeWriteRepository, auth_model.AccessTokenScopeWriteUser)
+
+		apiRepo := createActionsTestRepo(t, user2Token, "actions-concurrency", false)
+		repo := unittest.AssertExistsAndLoadBean(t, &repo_model.Repository{ID: apiRepo.ID})
+		user2APICtx := NewAPITestContext(t, repo.OwnerName, repo.Name, auth_model.AccessTokenScopeWriteRepository)
+		defer doAPIDeleteRepository(user2APICtx)(t)
+
+		runner := newMockRunner()
+		runner.registerAsRepoRunner(t, repo.OwnerName, repo.Name, "mock-runner", []string{"ubuntu-latest"}, false)
+
+		wf1TreePath := ".gitea/workflows/workflow-1.yml"
+		wf1FileContent := `name: Workflow-1
+on: 
+  push:
+    paths:
+      - '.gitea/workflows/workflow-1.yml'
+concurrency:
+  group: test-group
+jobs:
+  wf1-job1:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo 'wf1-job1'
+  wf1-job2:
+    runs-on: customized-runner
+    steps:
+      - run: echo 'wf1-job1'
+`
+
+		wf2TreePath := ".gitea/workflows/workflow-2.yml"
+		wf2FileContent := `name: Workflow-2
+on: 
+  push:
+    paths:
+      - '.gitea/workflows/workflow-2.yml'
+concurrency:
+  group: test-group
+jobs:
+  wf2-job1:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo 'wf2-job1'
+`
+		// push workflow1
+		opts1 := getWorkflowCreateFileOptions(user2, repo.DefaultBranch, "create %s"+wf1TreePath, wf1FileContent)
+		createWorkflowFile(t, user2Token, repo.OwnerName, repo.Name, wf1TreePath, opts1)
+
+		// fetch wf1-job1
+		w1j1Task := runner.fetchTask(t)
+		_, _, run1 := getTaskAndJobAndRunByTaskID(t, w1j1Task.Id)
+		assert.Equal(t, "test-group", run1.ConcurrencyGroup)
+		assert.Equal(t, actions_model.StatusRunning, run1.Status)
+		// query wf1-job2 from db and check its status
+		w1j2Job := unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRunJob{RunID: run1.ID, JobID: "wf1-job2"})
+		// wf1-job2 is waiting but no runner will run it
+		assert.Equal(t, actions_model.StatusWaiting, w1j2Job.Status)
+
+		time.Sleep(time.Second)
+		now := time.Now()
+		time.Sleep(time.Second)
+
+		// push workflow2
+		opts2 := getWorkflowCreateFileOptions(user2, repo.DefaultBranch, "create %s"+wf2TreePath, wf2FileContent)
+		createWorkflowFile(t, user2Token, repo.OwnerName, repo.Name, wf2TreePath, opts2)
+
+		// query run2 from db and check its status
+		run2 := unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRun{RepoID: repo.ID, WorkflowID: "workflow-2.yml"})
+		// run2 is blocked because it is blocked by workflow1's concurrency group "test-group"
+		assert.Equal(t, actions_model.StatusBlocked, run2.Status)
+
+		// mock time
+		fakeNow := now.Add(setting.Actions.AbandonedJobTimeout)
+		timeutil.MockSet(fakeNow)
+		defer timeutil.MockUnset()
+
+		// call CancelAbandonedJobs manually
+		assert.NoError(t, actions_service.CancelAbandonedJobs(t.Context()))
+
+		// check the status of wf1-job2
+		w1j2Job = unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRunJob{ID: w1j2Job.ID})
+		assert.Equal(t, actions_model.StatusCancelled, w1j2Job.Status)
+		// check the status of run1
+		run1 = unittest.AssertExistsAndLoadBean(t, &actions_model.ActionRun{ID: run1.ID})
+		assert.Equal(t, actions_model.StatusCancelled, run1.Status)
+
+		// fetch wf2-job1 and check
+		w2j1Task := runner.fetchTask(t)
+		_, w2j1Job, run2 := getTaskAndJobAndRunByTaskID(t, w2j1Task.Id)
+		assert.Equal(t, "test-group", run2.ConcurrencyGroup)
+		assert.Equal(t, "wf2-job1", w2j1Job.JobID)
+		assert.Equal(t, actions_model.StatusRunning, run2.Status)
+		assert.Equal(t, actions_model.StatusRunning, w2j1Job.Status)
+	})
+}
+
 func TestRunAndJobWithSameConcurrencyGroup(t *testing.T) {
 	onGiteaRun(t, func(t *testing.T, u *url.URL) {
 		user2 := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 2})