diff --git a/modules/utils/utils.go b/modules/utils/utils.go
index 2356562..bb5c186 100644
--- a/modules/utils/utils.go
+++ b/modules/utils/utils.go
@@ -2,6 +2,7 @@ package utils
 
 import (
 	"encoding/json"
+	"time"
 
 	"clickandjoin.app/managementsystem/modules/structs"
 	gocnjhelper "git.clickandjoin.umbach.dev/ClickandJoin/go-cnj-helper"
@@ -32,6 +33,10 @@ func UnmarshalReceivedMessage(body []byte, message any) error {
 	return nil
 }
 
+func GetCurrentTimestamp() int64 {
+	return time.Now().Unix()
+}
+
 func ValidatorInit() {
 	cnjvalidator.Validate.RegisterStructValidationMapRules(cnjglobals.GeneralRules,
 		structs.UpdateUserRequest{},
diff --git a/routers/api/v1/user/user.go b/routers/api/v1/user/user.go
index 4b610e3..9caee6b 100644
--- a/routers/api/v1/user/user.go
+++ b/routers/api/v1/user/user.go
@@ -5,6 +5,7 @@ import (
 
 	"clickandjoin.app/managementsystem/modules/scylladb"
 	"clickandjoin.app/managementsystem/modules/structs"
+	"clickandjoin.app/managementsystem/modules/utils"
 	gocnjhelper "git.clickandjoin.umbach.dev/ClickandJoin/go-cnj-helper"
 	"git.clickandjoin.umbach.dev/ClickandJoin/go-cnj-helper/cnjvalidator"
 	"git.clickandjoin.umbach.dev/ClickandJoin/go-cnj-helper/dbstructs"
@@ -65,32 +66,41 @@ func UpdateUser(c *fiber.Ctx) error {
 	}
 
 	// check whether the email in the requested has been changed in relation to the user
-	if foundUser.Email != body.Email {
+	if body.Email != foundUser.Email {
 		if status, err := cnjvalidator.HandleEmailValidation(scylladb.Session, scylladb.Cluster.Keyspace, body.Email); err != nil {
 			return c.SendStatus(status)
 		}
 	}
 
 	accountNameLc := strings.ToLower(body.AccountName)
+	lastAccountNameLc := foundUser.LastAccountNameLc
 
 	// check whether the account name in the requested has been changed in relation to the user
-	if foundUser.AccountNameLc != accountNameLc {
-		if status, err := cnjvalidator.HandleAccountNameValidation(scylladb.Session, scylladb.Cluster.Keyspace, body.AccountName); err != nil {
-			return c.SendStatus(status)
+	if accountNameLc != foundUser.AccountNameLc {
+		lastAccountNameLc = foundUser.AccountNameLc
+
+		if accountNameLc != foundUser.LastAccountNameLc {
+			if status, err := cnjvalidator.HandleAccountNameValidation(scylladb.Session, scylladb.Cluster.Keyspace, body.AccountName); err != nil {
+				return c.SendStatus(status)
+			}
 		}
 	}
 
+	gocnjhelper.LogDebugf("lastAc %s", lastAccountNameLc, accountNameLc != foundUser.AccountNameLc)
+
 	updatedUser := dbstructs.User{
-		Id:            params.UserId,
-		Username:      body.Username,
-		AccountName:   body.AccountName,
-		AccountNameLc: strings.ToLower(body.AccountName),
-		Email:         body.Email,
-		Description:   body.Description,
-		AccountStatus: body.AccountStatus,
+		Id:                   params.UserId,
+		Username:             body.Username,
+		AccountName:          body.AccountName,
+		AccountNameLc:        accountNameLc,
+		LastAccountNameLc:    lastAccountNameLc,
+		AccountNameUpdatedAt: utils.GetCurrentTimestamp(),
+		Email:                body.Email,
+		Description:          body.Description,
+		AccountStatus:        body.AccountStatus,
 	}
 
-	if err := scylladb.Session.Query(gocnjhelper.DbMUsers.Update("username", "account_name", "account_name_lc", "email", "description", "account_status")).BindStruct(updatedUser).ExecRelease(); err != nil {
+	if err := scylladb.Session.Query(gocnjhelper.DbMUsers.Update("username", "account_name", "account_name_lc", "last_account_name_lc", "account_name_updated_at", "email", "description", "account_status")).BindStruct(updatedUser).ExecRelease(); err != nil {
 		gocnjhelper.LogErrorf("Failed to update user, err: %s", err.Error())
 		return c.SendStatus(fiber.StatusInternalServerError)
 	}