diff --git a/src/karton.cpp b/src/karton.cpp
index c377dd7..f9b5f7b 100644
--- a/src/karton.cpp
+++ b/src/karton.cpp
@@ -35,11 +35,17 @@ Karton::Karton(QObject *parent)
 
 Karton::~Karton()
 {
+    // Children run after this body. Deregister and free domains while the connection is open,
+    // or virConnectDomainEventDeregisterAny deadlocks on the libvirt lock (bug 56270).
+    delete m_monitor;
+    m_monitor = nullptr;
+    cleanupDomainViewer();
+    while (!m_domains.isEmpty())
+        delete m_domains.takeLast();
     if (m_conn) {
         virConnectClose(m_conn);
         m_conn = nullptr;
     }
-    cleanupDomainViewer();
 }
 
 Karton *Karton::self()