diff --git a/slpkg/upgrade.py b/slpkg/upgrade.py
index 227e0f9d..b0999881 100644
--- a/slpkg/upgrade.py
+++ b/slpkg/upgrade.py
@@ -138,6 +138,7 @@ class Upgrade(Configs):  # pylint: disable=[R0902]
             name (str): Package name.
             err (InvalidVersion): InvalidVersion error.
         """
+        log: dict = {}
         if self.upgrade_log_file.is_file():
             log: dict = self.utils.read_json_file(self.upgrade_log_file)