diff --git a/docs/reference/gio/gio-sections-common.txt b/docs/reference/gio/gio-sections-common.txt
index 39999c452..314d1009e 100644
--- a/docs/reference/gio/gio-sections-common.txt
+++ b/docs/reference/gio/gio-sections-common.txt
@@ -3026,6 +3026,8 @@ g_dbus_method_invocation_return_gerror
 g_dbus_method_invocation_return_dbus_error
 g_dbus_method_invocation_take_error
 g_dbus_method_invocation_return_value_with_unix_fd_list
+G_DBUS_METHOD_INVOCATION_HANDLED
+G_DBUS_METHOD_INVOCATION_UNHANDLED
 <SUBSECTION Standard>
 G_DBUS_METHOD_INVOCATION
 G_IS_DBUS_METHOD_INVOCATION
diff --git a/gio/gdbus-2.0/codegen/codegen.py b/gio/gdbus-2.0/codegen/codegen.py
index 5234b3807..cda047173 100644
--- a/gio/gdbus-2.0/codegen/codegen.py
+++ b/gio/gdbus-2.0/codegen/codegen.py
@@ -1522,7 +1522,7 @@ class CodeGenerator:
                         '   *\n'
                         '   * If a signal handler returns %%TRUE, it means the signal handler will handle the invocation (e.g. take a reference to @invocation and eventually call %s_complete_%s() or e.g. g_dbus_method_invocation_return_error() on it) and no order signal handlers will run. If no signal handler handles the invocation, the %%G_DBUS_ERROR_UNKNOWN_METHOD error is returned.\n'
                         '   *\n'
-                        '   * Returns: %%TRUE if the invocation was handled, %%FALSE to let other signal handlers run.\n'
+                        '   * Returns: %%G_DBUS_METHOD_INVOCATION_HANDLED or %%TRUE if the invocation was handled, %%G_DBUS_METHOD_INVOCATION_UNHANDLED or %%FALSE to let other signal handlers run.\n'
                         %(i.name, m.name, i.name_lower, m.name_lower), False))
                 self.write_gtkdoc_deprecated_and_since_and_close(m, self.outfile, 2)
                 if m.unix_fd:
diff --git a/gio/gdbusmethodinvocation.h b/gio/gdbusmethodinvocation.h
index 061256ffe..775070a2c 100644
--- a/gio/gdbusmethodinvocation.h
+++ b/gio/gdbusmethodinvocation.h
@@ -33,6 +33,41 @@ G_BEGIN_DECLS
 #define G_DBUS_METHOD_INVOCATION(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_DBUS_METHOD_INVOCATION, GDBusMethodInvocation))
 #define G_IS_DBUS_METHOD_INVOCATION(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_DBUS_METHOD_INVOCATION))
 
+/**
+ * G_DBUS_METHOD_INVOCATION_HANDLED:
+ *
+ * The value returned by handlers of the signals generated by
+ * the `gdbus-codegen` tool to indicate that a method call has been
+ * handled by an implementation. It is equal to %TRUE, but using
+ * this macro is sometimes more readable.
+ *
+ * In code that needs to be backwards-compatible with older GLib,
+ * use %TRUE instead, often written like this:
+ *
+ * |[
+ *   g_dbus_method_invocation_return_error (invocation, ...);
+ *   return TRUE;    // handled
+ * ]|
+ *
+ * Since: 2.68
+ */
+#define G_DBUS_METHOD_INVOCATION_HANDLED TRUE GLIB_AVAILABLE_MACRO_IN_2_68
+
+/**
+ * G_DBUS_METHOD_INVOCATION_UNHANDLED:
+ *
+ * The value returned by handlers of the signals generated by
+ * the `gdbus-codegen` tool to indicate that a method call has not been
+ * handled by an implementation. It is equal to %FALSE, but using
+ * this macro is sometimes more readable.
+ *
+ * In code that needs to be backwards-compatible with older GLib,
+ * use %FALSE instead.
+ *
+ * Since: 2.68
+ */
+#define G_DBUS_METHOD_INVOCATION_UNHANDLED FALSE GLIB_AVAILABLE_MACRO_IN_2_68
+
 GLIB_AVAILABLE_IN_ALL
 GType                  g_dbus_method_invocation_get_type             (void) G_GNUC_CONST;
 GLIB_AVAILABLE_IN_ALL