1 files changed, 8 insertions, 3 deletions
diff --git a/plugins/VersionUpgrade/VersionUpgrade27to30/__init__.py b/plugins/VersionUpgrade/VersionUpgrade27to30/__init__.py
index 4da7257b1c..bddc71a1e0 100644
--- a/plugins/VersionUpgrade/VersionUpgrade27to30/__init__.py
+++ b/plugins/VersionUpgrade/VersionUpgrade27to30/__init__.py
@@ -1,11 +1,16 @@
-# Copyright (c) 2017 Ultimaker B.V.
+# 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 VersionUpgrade27to30
 
+if TYPE_CHECKING:
+    from UM.Application import Application
+
 upgrade = VersionUpgrade27to30.VersionUpgrade27to30()
 
-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 }