1 files changed, 7 insertions, 2 deletions
diff --git a/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py b/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
index 5073be772d..006b21bc48 100644
--- a/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
+++ b/plugins/VersionUpgrade/VersionUpgrade32to33/__init__.py
@@ -1,11 +1,16 @@
 # Copyright (c) 2018 Ultimaker B.V.
 # Cura is released under the terms of the LGPLv3 or higher.
 
+from typing import Any, Dict, TYPE_CHECKING
+
 from . import VersionUpgrade32to33
 
+if TYPE_CHECKING:
+    from UM.Application import Application
+
 upgrade = VersionUpgrade32to33.VersionUpgrade32to33()
 
-def getMetaData():
+def getMetaData() -> Dict[str, Any]:
     return {
         "version_upgrade": {
             # From                           To                              Upgrade function
@@ -51,5 +56,5 @@ def getMetaData():
         }
     }
 
-def register(app):
+def register(app: "Application") -> Dict[str, Any]:
     return { "version_upgrade": upgrade }
 \ No newline at end of file