diff --git a/CveXplore/database/maintenance/DownloadHandler.py b/CveXplore/database/maintenance/DownloadHandler.py
index 39b7c612..958ba6eb 100644
--- a/CveXplore/database/maintenance/DownloadHandler.py
+++ b/CveXplore/database/maintenance/DownloadHandler.py
@@ -152,7 +152,7 @@ def chunk_list(self, lst: list, number: int) -> list:
         Yield successive n-sized chunks from lst.
         """
         for i in range(0, len(lst), number):
-            yield lst[i: i + number]
+            yield lst[i : i + number]
 
     def _db_bulk_writer(self, batch: list):
         """
diff --git a/CveXplore/database/maintenance/main_updater.py b/CveXplore/database/maintenance/main_updater.py
index 8165d5af..7896c7cc 100644
--- a/CveXplore/database/maintenance/main_updater.py
+++ b/CveXplore/database/maintenance/main_updater.py
@@ -106,7 +106,9 @@ def update(self, update_source: str | list = None):
         self.datasource.set_handlers_for_collections()
 
         self.logger.info(f"Database update complete!")
-        self.logger.info(f"Update Total duration: {timedelta(seconds=time.time() - start_time)}")
+        self.logger.info(
+            f"Update Total duration: {timedelta(seconds=time.time() - start_time)}"
+        )
 
     def populate(self, populate_source: str | list = None):
         """
@@ -159,7 +161,9 @@ def populate(self, populate_source: str | list = None):
         self.datasource.set_handlers_for_collections()
 
         self.logger.info(f"Database population complete!")
-        self.logger.info(f"Populate total duration: {timedelta(seconds=time.time() - start_time)}")
+        self.logger.info(
+            f"Populate total duration: {timedelta(seconds=time.time() - start_time)}"
+        )
 
     def initialize(self):
         """
@@ -183,4 +187,6 @@ def initialize(self):
         self.update()
 
         self.logger.info(f"Database initialization complete!")
-        self.logger.info(f"Initialization total duration: {timedelta(seconds=time.time() - start_time)}")
+        self.logger.info(
+            f"Initialization total duration: {timedelta(seconds=time.time() - start_time)}"
+        )