diff --git a/DiscoverOctoPrintAction.py b/DiscoverOctoPrintAction.py
index 9c966e8..32d54a9 100644
--- a/DiscoverOctoPrintAction.py
+++ b/DiscoverOctoPrintAction.py
@@ -12,8 +12,12 @@
 from cura.MachineAction import MachineAction
 from cura.Settings.CuraStackBuilder import CuraStackBuilder
 
-USE_QT5 = False
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+USE_QT5 = False
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtCore import pyqtSignal, pyqtProperty, pyqtSlot, QUrl, QObject, QTimer
     from PyQt6.QtGui import QDesktopServices
     from PyQt6.QtNetwork import (
@@ -29,7 +33,7 @@
     QNetworkRequestAttributes = QNetworkRequest.Attribute
     QSslSocketPeerVerifyModes = QSslSocket.PeerVerifyMode
 
-except ImportError:
+else:
     from PyQt5.QtCore import pyqtSignal, pyqtProperty, pyqtSlot, QUrl, QObject, QTimer
     from PyQt5.QtGui import QDesktopServices
     from PyQt5.QtNetwork import (
diff --git a/NetworkMJPGImage.py b/NetworkMJPGImage.py
index a725df1..1f5cf88 100644
--- a/NetworkMJPGImage.py
+++ b/NetworkMJPGImage.py
@@ -2,6 +2,10 @@
 # NetworkMJPGImage is released under the terms of the LGPLv3 or higher.
 
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtCore import QUrl, pyqtProperty, pyqtSignal, pyqtSlot, QRect, QByteArray
     from PyQt6.QtGui import QImage, QPainter
     from PyQt6.QtQuick import QQuickPaintedItem
@@ -14,7 +18,7 @@
     )
     QNetworkRequestAttributes = QNetworkRequest.Attribute
     QSslSocketPeerVerifyModes = QSslSocket.PeerVerifyMode
-except ImportError:
+else:
     from PyQt5.QtCore import QUrl, pyqtProperty, pyqtSignal, pyqtSlot, QRect, QByteArray
     from PyQt5.QtGui import QImage, QPainter
     from PyQt5.QtQuick import QQuickPaintedItem
diff --git a/NetworkReplyTimeout.py b/NetworkReplyTimeout.py
index c8e94c3..cff6d04 100644
--- a/NetworkReplyTimeout.py
+++ b/NetworkReplyTimeout.py
@@ -2,9 +2,13 @@
 # NetworkReplyTimeout is released under the terms of the AGPLv3 or higher.
 
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtCore import QObject, QTimer
     from PyQt6.QtNetwork import QNetworkReply
-except ImportError:
+else:
     from PyQt5.QtCore import QObject, QTimer
     from PyQt5.QtNetwork import QNetworkReply
 
diff --git a/OctoPrintOutputDevice.py b/OctoPrintOutputDevice.py
index b8155a3..08bcacd 100644
--- a/OctoPrintOutputDevice.py
+++ b/OctoPrintOutputDevice.py
@@ -34,8 +34,12 @@
 
 from cura.PrinterOutput.NetworkedPrinterOutputDevice import NetworkedPrinterOutputDevice
 
-USE_QT5 = False
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+USE_QT5 = False
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtNetwork import (
         QHttpPart,
         QNetworkRequest,
@@ -58,7 +62,7 @@
     QNetworkReplyNetworkErrors = QNetworkReply.NetworkError
     QSslSocketPeerVerifyModes = QSslSocket.PeerVerifyMode
 
-except ImportError:
+else:
     from PyQt5.QtNetwork import (
         QHttpPart,
         QNetworkRequest,
diff --git a/OctoPrintOutputDevicePlugin.py b/OctoPrintOutputDevicePlugin.py
index 96080d6..f8fad5a 100644
--- a/OctoPrintOutputDevicePlugin.py
+++ b/OctoPrintOutputDevicePlugin.py
@@ -11,8 +11,12 @@
 from UM.Settings.ContainerStack import ContainerStack
 
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtCore import QTimer
-except ImportError:
+else:
     from PyQt5.QtCore import QTimer
 
 import time
diff --git a/UploadOptions.py b/UploadOptions.py
index 995c4c7..38f3f32 100644
--- a/UploadOptions.py
+++ b/UploadOptions.py
@@ -5,10 +5,14 @@
 from UM.Version import Version
 from UM.Util import parseBool
 
-USE_QT5 = False
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+USE_QT5 = False
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtCore import QObject, pyqtSignal, pyqtProperty, pyqtSlot
-except ImportError:
+else:
     from PyQt5.QtCore import QObject, pyqtSignal, pyqtProperty, pyqtSlot
     USE_QT5 = True
 
diff --git a/WebcamsModel.py b/WebcamsModel.py
index 6183206..fd1cd2b 100644
--- a/WebcamsModel.py
+++ b/WebcamsModel.py
@@ -2,8 +2,12 @@
 # OctoPrintPlugin is released under the terms of the AGPLv3 or higher.
 
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtCore import Qt
-except ImportError:
+else:
     from PyQt5.QtCore import Qt
 
 from UM.Qt.ListModel import ListModel
diff --git a/__init__.py b/__init__.py
index ed9c887..bd990e2 100644
--- a/__init__.py
+++ b/__init__.py
@@ -12,8 +12,12 @@
 from UM.Logger import Logger
 
 try:
+    from cura.ApplicationMetadata import CuraSDKVersion
+except ImportError: # Cura <= 3.6
+    CuraSDKVersion = "6.0.0"
+if CuraSDKVersion >= "8.0.0":
     from PyQt6.QtQml import qmlRegisterType
-except ImportError:
+else:
     from PyQt5.QtQml import qmlRegisterType
 
 def getMetaData():