diff --git a/AutoCat.xcodeproj/project.pbxproj b/AutoCat.xcodeproj/project.pbxproj
index 46b9c57..bc18b3c 100644
--- a/AutoCat.xcodeproj/project.pbxproj
+++ b/AutoCat.xcodeproj/project.pbxproj
@@ -1653,7 +1653,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = AutoCat/AutoCat.entitlements;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 136;
+				CURRENT_PROJECT_VERSION = 137;
 				DEVELOPMENT_TEAM = 46DTTB8X4S;
 				INFOPLIST_FILE = AutoCat/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = AutoCat;
@@ -1680,7 +1680,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CODE_SIGN_ENTITLEMENTS = AutoCat/AutoCat.entitlements;
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 136;
+				CURRENT_PROJECT_VERSION = 137;
 				DEVELOPMENT_TEAM = 46DTTB8X4S;
 				INFOPLIST_FILE = AutoCat/Info.plist;
 				INFOPLIST_KEY_CFBundleDisplayName = AutoCat;
diff --git a/AutoCat/Controllers/CheckController.swift b/AutoCat/Controllers/CheckController.swift
index d603a89..0014437 100644
--- a/AutoCat/Controllers/CheckController.swift
+++ b/AutoCat/Controllers/CheckController.swift
@@ -56,7 +56,11 @@ class CheckController: UIViewController, UITableViewDelegate, UISearchResultsUpd
         }
         
         self.history.delegate = self
-        NotificationCenter.default.addObserver(self, selector:#selector(self.calendarDayDidChange(_:)), name:NSNotification.Name.NSCalendarDayChanged, object:nil)
+        
+        NotificationCenter.default.addObserver(forName: .NSCalendarDayChanged,
+                                               object: nil,
+                                               queue: .main,
+                                               using: calendarDayDidChange)
     }
     
     override func viewWillDisappear(_ animated: Bool) {
@@ -118,9 +122,9 @@ class CheckController: UIViewController, UITableViewDelegate, UISearchResultsUpd
         }
     }
     
-    @objc private func calendarDayDidChange(_ notification : NSNotification) {
-        DispatchQueue.main.async {
-            self.historyDataSource.reload()
+    nonisolated private func calendarDayDidChange(_ notification : Notification) {
+        MainActor.assumeIsolated {
+            historyDataSource.reload()
         }
     }