diff --git a/setup.cfg b/setup.cfg
index cae36b6..fd965f2 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,7 +15,7 @@ classifiers =
 package_dir =
     = src
 packages = find:
-python_requires = >=3.6
+python_requires = >=3.8
 install_requires =
     requests
     requests-futures
diff --git a/src/fime/main.py b/src/fime/main.py
index 8ae4743..24d35a3 100755
--- a/src/fime/main.py
+++ b/src/fime/main.py
@@ -20,6 +20,7 @@ from fime.util import get_screen_height, get_icon
 class App:
     def __init__(self):
         self.app = QtWidgets.QApplication(sys.argv)
+        self.app.setQuitOnLastWindowClosed(False)
 
         data = Data()
         self.tasks = Tasks(data)
@@ -28,7 +29,7 @@ class App:
 
         icon = get_icon("appointment-new")
 
-        self.menu = QtWidgets.QMenu()
+        self.menu = QtWidgets.QMenu(None)
 
         self.import_task = ImportTask(None)
         self.import_task.accepted.connect(self.new_task_imported)
@@ -116,7 +117,8 @@ class App:
         exit_action = self.menu.addAction("Close")
         exit_action.triggered.connect(self.app.quit)
 
-    def sigterm_handler(self, _signo, _frame):
+    def sigterm_handler(self, signo, _frame):
+        print(f'handling signal "{signal.strsignal(signo)}"')
         self.app.quit()
 
     def run(self):