diff --git a/src/__init__.py b/src/__init__.py
index 30cbd81..1062a81 100644
--- a/src/__init__.py
+++ b/src/__init__.py
@@ -8,25 +8,24 @@ from appdirs import AppDirs
 
 from config import Config
 
-
 app = AppDirs("SemesterApparatsManager", "SAM")
-LOG_DIR = app.user_log_dir
-CONFIG_DIR = app.user_config_dir
-if not os.path.exists(LOG_DIR):
-    os.makedirs(LOG_DIR)
-if not os.path.exists(CONFIG_DIR):
-    os.makedirs(CONFIG_DIR)
+LOG_DIR: str = app.user_log_dir  # type: ignore
+CONFIG_DIR: str = app.user_config_dir  # type: ignore
+if not os.path.exists(LOG_DIR):  # type: ignore
+    os.makedirs(LOG_DIR)  # type: ignore
+if not os.path.exists(CONFIG_DIR):  # type: ignore
+    os.makedirs(CONFIG_DIR)  # type: ignore
 
 
 settings = Config(f"{CONFIG_DIR}/config.yaml")
-DATABASE_DIR = (
-    app.user_config_dir if settings.database.path is None else settings.database.path
+DATABASE_DIR = (  # type: ignore
+    app.user_config_dir if settings.database.path is None else settings.database.path  # type: ignore
 )
-if not os.path.exists(DATABASE_DIR):
-    os.makedirs(DATABASE_DIR)
+if not os.path.exists(DATABASE_DIR):  # type: ignore
+    os.makedirs(DATABASE_DIR)  # type: ignore
 first_launch = settings.exists
-if not os.path.exists(settings.database.temp.expanduser()):
-    settings.database.temp.expanduser().mkdir(parents=True, exist_ok=True)
+if not os.path.exists(settings.database.temp.expanduser()):  # type: ignore
+    settings.database.temp.expanduser().mkdir(parents=True, exist_ok=True)  # type: ignore
 from .utils.icon import Icon
 
 if not os.path.exists("logs"):
diff --git a/src/backend/__init__.py b/src/backend/__init__.py
index 7321e96..9b79959 100644
--- a/src/backend/__init__.py
+++ b/src/backend/__init__.py
@@ -9,6 +9,7 @@ __all__ = [
     "NewEditionCheckerThread",
     "recreateElsaFile",
     "recreateFile",
+    "Catalogue"
 ]
 
 from .admin_console import AdminCommands
@@ -20,3 +21,4 @@ from .thread_bookgrabber import BookGrabber
 from .thread_neweditions import NewEditionCheckerThread
 from .threads_autoadder import AutoAdder
 from .threads_availchecker import AvailChecker
+from .catalogue import Catalogue
diff --git a/src/ui/widgets/__init__.py b/src/ui/widgets/__init__.py
index f78895c..86eb215 100644
--- a/src/ui/widgets/__init__.py
+++ b/src/ui/widgets/__init__.py
@@ -11,6 +11,9 @@ __all__ = [
     "EditProf",
     "IconWidget",
     "NewEditionChecker",
+    "NewEditionCheckSelector",
+    "UpdateSignatures",
+    "UpdaterThread"
 ]
 
 from .admin_create_user import UserCreate
@@ -23,5 +26,7 @@ from .filepicker import FilePicker
 from .graph import DataQtGraph
 from .iconLine import IconWidget
 from .MessageCalendar import MessageCalendar
-from .new_edition_check import NewEditionChecker
+from .new_edition_check import NewEditionChecker, NewEditionCheckSelector
 from .searchPage import SearchStatisticPage
+from .signature_update import UpdateSignatures, UpdaterThread
+