diff --git a/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py b/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py
index 28df74b499..dce2b311bb 100644
--- a/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py
+++ b/plugins/VersionUpgrade/VersionUpgrade22to24/VersionUpgrade.py
@@ -2,6 +2,7 @@
 # Cura is released under the terms of the AGPLv3 or higher.
 
 import configparser #To get version numbers from config files.
+import os
 import os.path
 import io