diff --git a/configure.ac b/configure.ac
index c8993b1..44f8938 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,17 +23,29 @@ PKG_CHECK_MODULES([libavcodec], [libavcodec])
 PKG_CHECK_MODULES([libavformat], [libavformat])
 PKG_CHECK_MODULES([libavutil], [libavutil])
 
+PKG_CHECK_MODULES(
+    [QT6WIDGETS], [Qt6Widgets], [qt6_enabled="yes"],
+        [
+         PKG_CHECK_MODULES([QT5WIDGETS], [Qt5Widgets], [qt6_enabled="no"])
+        ]
+)
 
-qt_host_bins="$( eval $PKG_CONFIG --variable=host_bins Qt5Core )"
-
-PKG_CHECK_MODULES([QT5WIDGETS], [Qt5Widgets])
+if test "x$qt6_enabled" = "xyes"; then
+    qt_host_bins="$( eval $PKG_CONFIG --variable=host_bins Qt6Core )"
+else
+    qt_host_bins="$( eval $PKG_CONFIG --variable=host_bins Qt5Core )"
+fi
 
 AC_ARG_WITH(
             [moc],
             [AS_HELP_STRING([--with-moc], [Path of the Qt meta object compiler.])],
             [AC_SUBST([MOC], [$with_moc])],
             [
-             AC_PATH_PROGS([MOC], [moc-qt5 moc], [not_found], [$qt_host_bins])
+             if test "x$qt6_enabled" = "xyes"; then
+                 AC_PATH_PROGS([MOC], [moc-qt6 moc], [not_found], [$qt_host_bins])
+             else
+                 AC_PATH_PROGS([MOC], [moc-qt5 moc], [not_found], [$qt_host_bins])
+             fi
              AS_IF(
                    [test "x$MOC" = "x$not_found"],
                    [AC_MSG_ERROR(["moc (Qt's meta object compiler) was not found."])]
@@ -41,18 +53,31 @@ AC_ARG_WITH(
             ]
 )
 
-AC_MSG_CHECKING([whether Qt is static])
-if [ `$PKG_CONFIG --variable=qt_config Qt5Core | $GREP 'static' > /dev/null` ]; then
-    static_qt="yes"
+if test "x$qt6_enabled" = "xyes"; then
+    AC_MSG_CHECKING([whether Qt is static])
+    if [ `$PKG_CONFIG --variable=qt_config Qt6Core | $GREP 'static' > /dev/null` ]; then
+        static_qt="yes"
+    else
+        static_qt="no"
+    fi
 else
-    static_qt="no"
+    AC_MSG_CHECKING([whether Qt is static])
+    if [ `$PKG_CONFIG --variable=qt_config Qt5Core | $GREP 'static' > /dev/null` ]; then
+        static_qt="yes"
+    else
+        static_qt="no"
+    fi
 fi
 AC_MSG_RESULT([$static_qt])
 
 AS_IF(
       [test "x$static_qt" = "xyes"],
       [
-       PKG_CHECK_MODULES([QT5PLATFORMSUPPORT], [Qt5PlatformSupport])
+       if test "x$qt6_enabled" = "xyes"; then
+           PKG_CHECK_MODULES([QT6PLATFORMSUPPORT], [Qt6PlatformSupport])
+       else
+           PKG_CHECK_MODULES([QT5PLATFORMSUPPORT], [Qt5PlatformSupport])
+       fi
        AC_DEFINE([D2VWITCH_STATIC_QT])
       ]
 )
@@ -70,7 +95,11 @@ AS_CASE(
 
          AS_IF([test "x$static_qt" = "xyes"],
                [
-                AC_SUBST([QT5PLATFORMPLUGIN], ["$qt_host_bins/../plugins/platforms/libqwindows.a"])
+                if test "x$qt6_enabled" = "xyes"; then
+                    AC_SUBST([QT6PLATFORMPLUGIN], ["$qt_host_bins/../plugins/platforms/libqwindows.a"])
+                else
+                    AC_SUBST([QT5PLATFORMPLUGIN], ["$qt_host_bins/../plugins/platforms/libqwindows.a"])
+                fi
                ]
          )
         ]
diff --git a/meson.build b/meson.build
index b1bf8c6..f10ee15 100644
--- a/meson.build
+++ b/meson.build
@@ -1,16 +1,30 @@
 project('d2vwitch', 'cpp',
         version: '5',
-        default_options: ['cpp_std=c++11', 'buildtype=release'],
+        default_options: ['buildtype=release'],
         meson_version: '>=0.46')
 
-qt5 = import('qt5')
+dep_qt6 = dependency('qt6', modules: ['Core', 'Gui', 'Widgets'], required: false)
+if dep_qt6.found()
+  if meson.version().version_compare('>= 0.57')
+    qt = import('qt6')
+    dep_qt = dep_qt6
+    dep_qt_options = ['cpp_std=c++17']
+    dep_qt_args = ['-std=c++17', '-DUSE_QT6']
+  else
+    error('Qt 6 is only supported since Meson 0.57.')
+  endif
+else
+  qt = import('qt5')
+  dep_qt = dependency('qt5', modules: ['Core', 'Gui', 'Widgets'], required : true)
+  dep_qt_options = ['cpp_std=c++11']
+  dep_qt_args = ['-std=c++11']
+endif
 
 deps = [
   dependency('vapoursynth').partial_dependency(includes: true, compile_args: true),
   dependency('libavcodec'),
   dependency('libavformat'),
   dependency('libavutil'),
-  dependency('qt5', modules: ['Core', 'Gui', 'Widgets'])
 ]
 
 moc_headers = [
@@ -19,7 +33,7 @@ moc_headers = [
   'src/ScrollArea.h'
 ]
 
-processed_files = qt5.preprocess(moc_headers: moc_headers)
+processed_files = qt.preprocess(moc_headers: moc_headers)
 
 sources = [
   'src/Audio.cpp',
@@ -44,7 +58,6 @@ sources = [
   processed_files
 ]
 
-
 warnings = [
   '-Wall',
   '-Wextra',
@@ -58,7 +71,9 @@ cpp_args = [
 
 executable('d2vwitch',
   sources: sources,
-  dependencies: deps,
+  dependencies: [deps, dep_qt],
   gui_app: true,
-  cpp_args: cpp_args,
-  install: true)
+  cpp_args: [cpp_args, dep_qt_args],
+  override_options: dep_qt_options,
+  install: true
+)
diff --git a/src/D2VWitch.cpp b/src/D2VWitch.cpp
index e5273f6..62b1002 100644
--- a/src/D2VWitch.cpp
+++ b/src/D2VWitch.cpp
@@ -641,7 +641,11 @@ int main(int argc, char **_argv) {
 
             if (index > -1) {
                 for (int i = index + 1; i < entries.size(); i++) {
+#ifdef USE_QT6
+                    if (entries[i].mid(4, 2) == name.mid(4, 2))
+#else
                     if (entries[i].midRef(4, 2) == name.midRef(4, 2))
+#endif
                         fake_file.push_back(input_dir.absoluteFilePath(entries[i]).toStdString());
                 }
             }
diff --git a/src/GUIWindow.cpp b/src/GUIWindow.cpp
index 9b563ad..812267b 100644
--- a/src/GUIWindow.cpp
+++ b/src/GUIWindow.cpp
@@ -656,7 +656,11 @@ GUIWindow::GUIWindow(QSettings &_settings, QWidget *parent)
         d2v_edit->setText(file_name);
     });
 
+#ifdef USE_QT6
+    connect(video_group, static_cast<void (QButtonGroup::*)(int, bool)>(&QButtonGroup::idToggled), [this] (int id, bool checked) {
+#else
     connect(video_group, static_cast<void (QButtonGroup::*)(int, bool)>(&QButtonGroup::buttonToggled), [this] (int id, bool checked) {
+#endif
         // "int id" is the QButtonGroup id, not AVStream::id
 
         if (checked) {