diff --git a/supervisor/dbus/systemd.py b/supervisor/dbus/systemd.py
index 31fa1531c..a18b6f406 100644
--- a/supervisor/dbus/systemd.py
+++ b/supervisor/dbus/systemd.py
@@ -112,6 +112,12 @@ class Systemd(DBusInterfaceProxy):
                 "No systemd support on the host. Host control has been disabled."
             )
 
+        if self.is_connected:
+            try:
+                await self.connected_dbus.Manager.call("subscribe")
+            except DBusError:
+                _LOGGER.warning("Could not subscribe to systemd signals")
+
     @property
     @dbus_property
     def startup_time(self) -> float:
diff --git a/tests/dbus/test_systemd.py b/tests/dbus/test_systemd.py
index 09fb22574..6489d0e95 100644
--- a/tests/dbus/test_systemd.py
+++ b/tests/dbus/test_systemd.py
@@ -32,6 +32,18 @@ async def test_dbus_systemd_info(dbus_session_bus: MessageBus):
     assert systemd.startup_time == 45.304696
 
 
+async def test_subscribe_on_connect(
+    systemd_service: SystemdService, dbus_session_bus: MessageBus
+):
+    """Test that Subscribe is called on connect to enable signal emission."""
+    systemd_service.Subscribe.calls.clear()
+    systemd = Systemd()
+
+    await systemd.connect(dbus_session_bus)
+
+    assert systemd_service.Subscribe.calls == [()]
+
+
 async def test_reboot(systemd_service: SystemdService, dbus_session_bus: MessageBus):
     """Test reboot."""
     systemd_service.Reboot.calls.clear()
diff --git a/tests/dbus_service_mocks/systemd.py b/tests/dbus_service_mocks/systemd.py
index fd4a59200..4ebb3f035 100644
--- a/tests/dbus_service_mocks/systemd.py
+++ b/tests/dbus_service_mocks/systemd.py
@@ -656,6 +656,10 @@ class Systemd(DBusServiceMock):
     def PowerOff(self) -> None:
         """Power off host computer."""
 
+    @dbus_method()
+    def Subscribe(self) -> None:
+        """Subscribe to systemd signals."""
+
     @dbus_method()
     def StartUnit(self, name: "s", mode: "s") -> "o":
         """Start a service unit."""