diff --git a/internal/bridge/migration.go b/internal/bridge/migration.go
new file mode 100644
index 00000000..975ae890
--- /dev/null
+++ b/internal/bridge/migration.go
@@ -0,0 +1,54 @@
+// Copyright (c) 2023 Proton AG
+//
+// This file is part of Proton Mail Bridge.
+//
+// Proton Mail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Proton Mail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Proton Mail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package bridge
+
+import (
+	"github.com/ProtonMail/gluon/reporter"
+	"github.com/ProtonMail/proton-bridge/v3/internal/vault"
+	"github.com/sirupsen/logrus"
+	"strings"
+)
+
+func (bridge *Bridge) databaseResyncNeeded() bool {
+	if strings.HasPrefix(bridge.lastVersion.String(), "3.4.0") &&
+		strings.HasPrefix(bridge.curVersion.String(), "3.4.1") {
+		logrus.WithFields(logrus.Fields{
+			"lastVersion": bridge.lastVersion.String(),
+			"currVersion": bridge.curVersion.String(),
+		}).Warning("Database re-synchronisation needed")
+		return true
+	}
+	return false
+}
+
+func (bridge *Bridge) TryMigrate(vault *vault.User) {
+	if bridge.databaseResyncNeeded() {
+		if err := bridge.reporter.ReportMessage("Database need to be re-sync for migration."); err != nil {
+			logrus.WithError(err).Error("Failed to report database re-sync for migration.")
+		}
+		if err := vault.ClearSyncStatus(); err != nil {
+			logrus.WithError(err).Error("Failed reset to SyncStatus.")
+			if err2 := bridge.reporter.ReportMessageWithContext("Failed to reset SyncStatus for Database migration.",
+				reporter.Context{
+					"error": err,
+				}); err2 != nil {
+				logrus.WithError(err2).Error("Failed to report reset SyncStatus error.")
+			}
+		}
+	}
+}
diff --git a/internal/bridge/user.go b/internal/bridge/user.go
index 000e5ccd..93af1643 100644
--- a/internal/bridge/user.go
+++ b/internal/bridge/user.go
@@ -524,6 +524,9 @@ func (bridge *Bridge) addUserWithVault(
 		return fmt.Errorf("failed to get Statistics directory: %w", err)
 	}
 
+	// re-set SyncStatus if database need to be re-sync for migration.
+	bridge.TryMigrate(vault)
+
 	user, err := user.New(
 		ctx,
 		vault,