diff --git a/plugins/Marketplace/LocalPackageList.py b/plugins/Marketplace/LocalPackageList.py
index a609e72d33..ae719b2699 100644
--- a/plugins/Marketplace/LocalPackageList.py
+++ b/plugins/Marketplace/LocalPackageList.py
@@ -3,7 +3,7 @@
 
 from typing import Any, Dict, List, Optional, TYPE_CHECKING
 
-from PyQt5.QtCore import pyqtSlot, QObject
+from PyQt6.QtCore import pyqtSlot, QObject
 
 from UM.Version import Version
 from UM.i18n import i18nCatalog
@@ -15,8 +15,8 @@ from .PackageModel import PackageModel
 from .Constants import PACKAGE_UPDATES_URL
 
 if TYPE_CHECKING:
-    from PyQt5.QtCore import QObject
-    from PyQt5.QtNetwork import QNetworkReply
+    from PyQt6.QtCore import QObject
+    from PyQt6.QtNetwork import QNetworkReply
 
 catalog = i18nCatalog("cura")
 
diff --git a/plugins/Marketplace/Marketplace.py b/plugins/Marketplace/Marketplace.py
index 2d98947572..46b20542c9 100644
--- a/plugins/Marketplace/Marketplace.py
+++ b/plugins/Marketplace/Marketplace.py
@@ -2,7 +2,7 @@
 # Cura is released under the terms of the LGPLv3 or higher.
 
 import os.path
-from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
+from PyQt6.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, QObject
 from typing import Optional, cast
 
 from cura.CuraApplication import CuraApplication  # Creating QML objects and managing packages.
diff --git a/plugins/Marketplace/PackageList.py b/plugins/Marketplace/PackageList.py
index 04b602002c..30162afe6c 100644
--- a/plugins/Marketplace/PackageList.py
+++ b/plugins/Marketplace/PackageList.py
@@ -4,7 +4,7 @@ import tempfile
 import json
 import os.path
 
-from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, Qt
+from PyQt6.QtCore import pyqtProperty, pyqtSignal, pyqtSlot, Qt
 from typing import cast, Dict, Optional, Set, TYPE_CHECKING
 
 from UM.i18n import i18nCatalog
@@ -22,8 +22,8 @@ from .PackageModel import PackageModel
 from .Constants import USER_PACKAGES_URL, PACKAGES_URL
 
 if TYPE_CHECKING:
-    from PyQt5.QtCore import QObject
-    from PyQt5.QtNetwork import QNetworkReply
+    from PyQt6.QtCore import QObject
+    from PyQt6.QtNetwork import QNetworkReply
 
 catalog = i18nCatalog("cura")
 
@@ -32,7 +32,7 @@ class PackageList(ListModel):
     """ A List model for Packages, this class serves as parent class for more detailed implementations.
     such as Packages obtained from Remote or Local source
     """
-    PackageRole = Qt.UserRole + 1
+    PackageRole = Qt.ItemDataRole.UserRole + 1
     DISK_WRITE_BUFFER_SIZE = 256 * 1024  # 256 KB
 
     def __init__(self, parent: Optional["QObject"] = None) -> None:
diff --git a/plugins/Marketplace/PackageModel.py b/plugins/Marketplace/PackageModel.py
index 7c2a5d9ae1..cbcc483c9d 100644
--- a/plugins/Marketplace/PackageModel.py
+++ b/plugins/Marketplace/PackageModel.py
@@ -5,8 +5,8 @@ import re
 from enum import Enum
 from typing import Any, cast, Dict, List, Optional
 
-from PyQt5.QtCore import pyqtProperty, QObject, pyqtSignal, pyqtSlot
-from PyQt5.QtQml import QQmlEngine
+from PyQt6.QtCore import pyqtProperty, QObject, pyqtSignal, pyqtSlot
+from PyQt6.QtQml import QQmlEngine
 
 from cura.CuraApplication import CuraApplication
 from cura.CuraPackageManager import CuraPackageManager
diff --git a/plugins/Marketplace/RemotePackageList.py b/plugins/Marketplace/RemotePackageList.py
index 16b0e721ad..eb97f39606 100644
--- a/plugins/Marketplace/RemotePackageList.py
+++ b/plugins/Marketplace/RemotePackageList.py
@@ -1,8 +1,8 @@
 #  Copyright (c) 2021 Ultimaker B.V.
 #  Cura is released under the terms of the LGPLv3 or higher.
 
-from PyQt5.QtCore import pyqtProperty, pyqtSignal, pyqtSlot
-from PyQt5.QtNetwork import QNetworkReply
+from PyQt6.QtCore import pyqtProperty, pyqtSignal, pyqtSlot
+from PyQt6.QtNetwork import QNetworkReply
 from typing import Optional, TYPE_CHECKING
 
 from UM.i18n import i18nCatalog
@@ -14,7 +14,7 @@ from .PackageList import PackageList
 from .PackageModel import PackageModel  # The contents of this list.
 
 if TYPE_CHECKING:
-    from PyQt5.QtCore import QObject
+    from PyQt6.QtCore import QObject
 
 catalog = i18nCatalog("cura")