diff --git a/e2e/mongo/nested/gen_User_mongo_orm.go b/e2e/mongo/nested/gen_User_mongo_orm.go
index 3b0bf53..c96fdcf 100644
--- a/e2e/mongo/nested/gen_User_mongo_orm.go
+++ b/e2e/mongo/nested/gen_User_mongo_orm.go
@@ -2,6 +2,7 @@ package nested
 
 import (
 	"context"
+	"time"
 
 	"github.com/ezbuy/ezorm/v2/pkg/orm"
 
@@ -11,6 +12,9 @@ import (
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
 
+// To import `time` package globally to satisfy `time.Time` index in yaml definition
+var _ time.Time
+
 var UserIndexes = []mongo.IndexModel{
 	{
 		Keys: UserIndexKey_Username,
diff --git a/e2e/mongo/user/gen_UserBlog_mongo_orm.go b/e2e/mongo/user/gen_UserBlog_mongo_orm.go
index f64d191..a2e7f6e 100644
--- a/e2e/mongo/user/gen_UserBlog_mongo_orm.go
+++ b/e2e/mongo/user/gen_UserBlog_mongo_orm.go
@@ -2,6 +2,7 @@ package user
 
 import (
 	"context"
+	"time"
 
 	"github.com/ezbuy/ezorm/v2/pkg/orm"
 
@@ -11,6 +12,9 @@ import (
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
 
+// To import `time` package globally to satisfy `time.Time` index in yaml definition
+var _ time.Time
+
 var UserBlogIndexes = []mongo.IndexModel{
 	{
 		Keys: UserBlogIndexKey_UserId,
diff --git a/e2e/mongo/user/gen_User_mongo_orm.go b/e2e/mongo/user/gen_User_mongo_orm.go
index 134a64f..c9267fd 100644
--- a/e2e/mongo/user/gen_User_mongo_orm.go
+++ b/e2e/mongo/user/gen_User_mongo_orm.go
@@ -2,6 +2,7 @@ package user
 
 import (
 	"context"
+	"time"
 
 	"github.com/ezbuy/ezorm/v2/pkg/orm"
 
@@ -11,6 +12,9 @@ import (
 	"go.mongodb.org/mongo-driver/mongo/options"
 )
 
+// To import `time` package globally to satisfy `time.Time` index in yaml definition
+var _ time.Time
+
 var UserIndexes = []mongo.IndexModel{
 	{
 		Keys: UserIndexKey_UsernameAge,
@@ -21,6 +25,9 @@ var UserIndexes = []mongo.IndexModel{
 	{
 		Keys: UserIndexKey_Age,
 	},
+	{
+		Keys: UserIndexKey_RegisterDate,
+	},
 }
 
 var UserIndexesFunc = func() {
@@ -36,6 +43,9 @@ var UserIndexKey_Username = bson.D{
 var UserIndexKey_Age = bson.D{
 	{Key: "Age", Value: 1},
 }
+var UserIndexKey_RegisterDate = bson.D{
+	{Key: "RegisterDate", Value: 1},
+}
 
 func init() {
 	orm.RegisterEzOrmObjByID("mongo_e2e", "User", newUserFindByID)
@@ -226,6 +236,18 @@ func (o *_UserMgr) FindByAge(ctx context.Context, Age int32, limit int, offset i
 	return
 }
 
+func (o *_UserMgr) FindByRegisterDate(ctx context.Context, RegisterDate time.Time, limit int, offset int, sortFields interface{}) (result []*User, err error) {
+	query := bson.M{
+		"RegisterDate": RegisterDate,
+	}
+	cursor, err := o.Query(ctx, query, limit, offset, sortFields)
+	if err != nil {
+		return nil, err
+	}
+	err = cursor.All(ctx, &result)
+	return
+}
+
 func (o *_UserMgr) Find(ctx context.Context, query interface{}, limit int, offset int, sortFields interface{}) (result []*User, err error) {
 	cursor, err := o.Query(ctx, query, limit, offset, sortFields)
 	if err != nil {
diff --git a/e2e/mongo/user/gen_User_struct.go b/e2e/mongo/user/gen_User_struct.go
index 1c8fab8..d3338da 100644
--- a/e2e/mongo/user/gen_User_struct.go
+++ b/e2e/mongo/user/gen_User_struct.go
@@ -35,10 +35,12 @@ const (
 type UserMgoSortField_WRP = primitive.D
 
 var (
-	UserMgoSortFieldIDAsc   = primitive.E{Key: "_id", Value: 1}
-	UserMgoSortFieldIDDesc  = primitive.E{Key: "_id", Value: -1}
-	UserMgoSortFieldAgeAsc  = primitive.E{Key: "Age", Value: 1}
-	UserMgoSortFieldAgeDesc = primitive.E{Key: "Age", Value: -1}
+	UserMgoSortFieldIDAsc            = primitive.E{Key: "_id", Value: 1}
+	UserMgoSortFieldIDDesc           = primitive.E{Key: "_id", Value: -1}
+	UserMgoSortFieldAgeAsc           = primitive.E{Key: "Age", Value: 1}
+	UserMgoSortFieldAgeDesc          = primitive.E{Key: "Age", Value: -1}
+	UserMgoSortFieldRegisterDateAsc  = primitive.E{Key: "registerDate", Value: 1}
+	UserMgoSortFieldRegisterDateDesc = primitive.E{Key: "registerDate", Value: -1}
 )
 
 func (p *User) GetNameSpace() string {
diff --git a/e2e/mongo/user/user.yaml b/e2e/mongo/user/user.yaml
index 1440bba..e658ae9 100644
--- a/e2e/mongo/user/user.yaml
+++ b/e2e/mongo/user/user.yaml
@@ -12,6 +12,7 @@ User:
       flags: [sort]
     - RegisterDate: time.Time
       attrs: {bsonTag: "registerDate", jsonTag: "registerDate"}
+      flags: [sort]
   indexes: [[Username, Age]]
   table: test_user
   dbname: test
diff --git a/e2e/mongo/user/user_test.go b/e2e/mongo/user/user_test.go
index 832c2f5..168aa32 100644
--- a/e2e/mongo/user/user_test.go
+++ b/e2e/mongo/user/user_test.go
@@ -299,11 +299,13 @@ func TestFindByIndexes(t *testing.T) {
 	u1.UserId = uid1
 	u1.Username = uname1
 	u1.Age = globalAge
+	u1.RegisterDate = time.Now()
 
 	u2 := user.Get_UserMgr().NewUser()
 	u2.UserId = uid2
 	u2.Username = uname2
 	u2.Age = globalAge
+	u2.RegisterDate = time.Now().Add(time.Hour)
 
 	cleanFn := initUsersHelper(t, u1, u2)
 	{
@@ -326,11 +328,24 @@ func TestFindByIndexes(t *testing.T) {
 			t.Fatalf("unexpected length of users, got %d, expect: %d", l, 0)
 		}
 	}
+	{
+		users, err := user.Get_UserMgr().FindAll(ctx, bson.M{}, user.UserMgoSortField_WRP{user.UserMgoSortFieldRegisterDateDesc})
+		if err != nil {
+			t.Fatalf("failed to find by username and age: %s", err)
+		}
+		if l := len(users); l != 2 {
+			t.Fatalf("unexpected length of users, got %d, expect: %d", l, 2)
+		}
+		if uid := users[0].UserId; uid != uid2 {
+			t.Fatalf("unexpected uid of users, got: %d, expect: %d", uid, uid2)
+		}
+	}
 
 	if err := cleanFn(ctx); err != nil {
 		t.Fatalf("failed to remove all users: %s", err)
 	}
 }
+
 func TestCount(t *testing.T) {
 	const (
 		uid1   = 1
diff --git a/internal/parser/shared/tpl/mongo_orm.gogo b/internal/parser/shared/tpl/mongo_orm.gogo
index 1ba62ad..edd7d85 100644
--- a/internal/parser/shared/tpl/mongo_orm.gogo
+++ b/internal/parser/shared/tpl/mongo_orm.gogo
@@ -4,16 +4,20 @@
 {{if ($obj.DbSwitch "mongo")}}
 import (
     "context"
+    "time"
 
     "github.com/ezbuy/ezorm/v2/pkg/orm"
 
-	"go.mongodb.org/mongo-driver/bson"
-	"go.mongodb.org/mongo-driver/bson/primitive"
-	"go.mongodb.org/mongo-driver/mongo"
-	"go.mongodb.org/mongo-driver/mongo/options"
+    "go.mongodb.org/mongo-driver/bson"
+    "go.mongodb.org/mongo-driver/bson/primitive"
+    "go.mongodb.org/mongo-driver/mongo"
+    "go.mongodb.org/mongo-driver/mongo/options"
 )
 
-{{- if gt (len $obj.Indexes) 0}}
+// To import `time` package globally to satisfy `time.Time` index in yaml definition
+var _ time.Time
+
+{{if gt (len $obj.Indexes) 0}}
 var {{$obj.Name}}Indexes = []mongo.IndexModel{
     {{- range $index := $obj.Indexes}}
     {