diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9e6efb..2bc4a8a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## 3.5.0
+
+* Switch to the new QNativeIpcKey based QSharedMemory constructor with Qt 6.6 and higher. - _Jonas Kvinge_
+
 ## 3.4.1
 
 * Improved Windows advapi32 link library dependency. - _Frederik Seiffert_
diff --git a/singleapplication.cpp b/singleapplication.cpp
index 3e8fcb5..95c4d18 100644
--- a/singleapplication.cpp
+++ b/singleapplication.cpp
@@ -67,12 +67,20 @@ SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSeconda
 #ifdef Q_OS_UNIX
     // By explicitly attaching it and then deleting it we make sure that the
     // memory is deleted even after the process has crashed on Unix.
+#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
+    d->memory = new QSharedMemory( QNativeIpcKey( d->blockServerName ) );
+#else
     d->memory = new QSharedMemory( d->blockServerName );
+#endif
     d->memory->attach();
     delete d->memory;
 #endif
     // Guarantee thread safe behaviour with a shared memory block.
+#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
+    d->memory = new QSharedMemory( QNativeIpcKey( d->blockServerName ) );
+#else
     d->memory = new QSharedMemory( d->blockServerName );
+#endif
 
     // Create a shared memory block
     if( d->memory->create( sizeof( InstancesInfo ) )){