diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 00b6b01..91a7806 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -52,9 +52,6 @@ add_checked_subdirectory(openal)
 add_checked_subdirectory(openssl)
 add_checked_subdirectory(opus)
 add_checked_subdirectory(qt)
-if (LINUX)
-    add_checked_subdirectory(qt5ct_support)
-endif()
 add_checked_subdirectory(qr_code_generator)
 add_checked_subdirectory(ranges)
 add_checked_subdirectory(rlottie)
diff --git a/external/qt/CMakeLists.txt b/external/qt/CMakeLists.txt
index dea3ac2..bd51d20 100644
--- a/external/qt/CMakeLists.txt
+++ b/external/qt/CMakeLists.txt
@@ -28,35 +28,6 @@ if (DESKTOP_APP_USE_PACKAGED)
         target_link_libraries(external_qt INTERFACE Qt5::DBus)
     endif()
 
-    if (LINUX AND DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES)
-        find_library(Qt5ThemeSupport_LIBRARY
-        NAMES
-            Qt5ThemeSupport
-        REQUIRED
-        )
-
-        find_path(Qt5ThemeSupport_INCLUDE_DIR
-        NAMES
-            QtThemeSupport/private/qgenericunixthemes_p.h
-        HINTS
-            ${Qt5Gui_INCLUDE_DIRS}
-        PATH_SUFFIXES
-            QtThemeSupport/${Qt5Gui_VERSION}
-        REQUIRED
-        )
-
-        target_link_libraries(external_qt
-        INTERFACE
-            ${Qt5ThemeSupport_LIBRARY}
-        )
-
-        target_include_directories(external_qt
-        INTERFACE
-            ${Qt5ThemeSupport_INCLUDE_DIR}
-            ${Qt5ThemeSupport_INCLUDE_DIR}/QtThemeSupport
-        )
-    endif()
-
     if (Qt5XkbCommonSupport_FOUND)
         target_link_libraries(external_qt INTERFACE Qt5::XkbCommonSupport)
 
@@ -69,18 +40,10 @@ if (DESKTOP_APP_USE_PACKAGED)
     if (Qt5WaylandClient_FOUND)
         target_link_libraries(external_qt INTERFACE Qt5::WaylandClient)
 
-        if (DESKTOP_APP_QTWAYLANDCLIENT_PRIVATE_HEADERS)
-            target_include_directories(external_qt
-            INTERFACE
-                ${DESKTOP_APP_QTWAYLANDCLIENT_PRIVATE_HEADERS}
-                ${DESKTOP_APP_QTWAYLANDCLIENT_PRIVATE_HEADERS}/QtWaylandClient
-            )
-        else()
-            target_include_directories(external_qt
-            INTERFACE
-                ${Qt5WaylandClient_PRIVATE_INCLUDE_DIRS}
-            )
-        endif()
+        target_include_directories(external_qt
+        INTERFACE
+            ${Qt5WaylandClient_PRIVATE_INCLUDE_DIRS}
+        )
     endif()
 else()
     target_include_directories(external_qt SYSTEM
@@ -120,15 +83,6 @@ else()
         )
     endif()
 
-    if (LINUX)
-        target_include_directories(external_qt SYSTEM
-        INTERFACE
-            ${qt_loc}/include/QtThemeSupport
-            ${qt_loc}/include/QtThemeSupport/${qt_version}
-            ${qt_loc}/include/QtThemeSupport/${qt_version}/QtThemeSupport
-        )
-    endif()
-
     target_compile_definitions(external_qt
     INTERFACE
         _REENTRANT
@@ -161,13 +115,6 @@ else()
         )
     endif()
 
-    if (LINUX)
-        target_compile_definitions(external_qt
-        INTERFACE
-            QT_THEME_SUPPORT_LIB
-        )
-    endif()
-
     if (WIN32)
         set(qt_lib_prefix "")
         set(qt_lib_suffix $<$<CONFIG:Debug>:d>.lib)
@@ -255,7 +202,6 @@ else()
             set(qt_libs_dbus_support lib/${qt_lib_prefix}Qt5LinuxAccessibilitySupport)
             set(qt_libs_dbus_plugins
                 plugins/platforminputcontexts/${qt_lib_prefix}ibusplatforminputcontextplugin
-                plugins/platformthemes/${qt_lib_prefix}qxdgdesktopportal
             )
             set(qt_libs_dbus_bearers
                 plugins/bearer/${qt_lib_prefix}qconnmanbearer
@@ -267,11 +213,11 @@ else()
         if (Qt5WaylandClient_FOUND)
             set(qt_libs_waylandclient lib/${qt_lib_prefix}Qt5WaylandClient)
             set(qt_libs_waylandclient_plugins
-                plugins/wayland-decoration-client/${qt_lib_prefix}bradient
-                plugins/wayland-shell-integration/${qt_lib_prefix}wl-shell
-                plugins/wayland-graphics-integration-client/${qt_lib_prefix}qt-plugin-wayland-egl
-                plugins/platforms/${qt_lib_prefix}qwayland-egl
                 plugins/platforms/${qt_lib_prefix}qwayland-generic
+                plugins/platforms/${qt_lib_prefix}qwayland-egl
+                plugins/wayland-graphics-integration-client/${qt_lib_prefix}qt-plugin-wayland-egl
+                plugins/wayland-shell-integration/${qt_lib_prefix}wl-shell
+                plugins/wayland-decoration-client/${qt_lib_prefix}bradient
             )
         endif()
         set(qt_libs
diff --git a/external/qt/qt_static_plugins/CMakeLists.txt b/external/qt/qt_static_plugins/CMakeLists.txt
index 921e41b..8764174 100644
--- a/external/qt/qt_static_plugins/CMakeLists.txt
+++ b/external/qt/qt_static_plugins/CMakeLists.txt
@@ -22,7 +22,6 @@ if (LINUX)
     target_link_libraries(external_qt_static_plugins
     PUBLIC
         desktop-app::external_nimf_qt5
-        desktop-app::external_qt5ct_support
     )
 
     if (NOT DESKTOP_APP_DISABLE_DBUS_INTEGRATION)
diff --git a/external/qt/qt_static_plugins/qt_static_plugins.cpp b/external/qt/qt_static_plugins/qt_static_plugins.cpp
index 34501ae..9f0244b 100644
--- a/external/qt/qt_static_plugins/qt_static_plugins.cpp
+++ b/external/qt/qt_static_plugins/qt_static_plugins.cpp
@@ -31,14 +31,13 @@ Q_IMPORT_PLUGIN(QSvgIconPlugin)
 Q_IMPORT_PLUGIN(QConnmanEnginePlugin)
 Q_IMPORT_PLUGIN(QNetworkManagerEnginePlugin)
 Q_IMPORT_PLUGIN(QIbusPlatformInputContextPlugin)
-Q_IMPORT_PLUGIN(QXdgDesktopPortalThemePlugin)
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 #ifndef DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION
+Q_IMPORT_PLUGIN(QWaylandIntegrationPlugin)
+Q_IMPORT_PLUGIN(QWaylandEglPlatformIntegrationPlugin)
 Q_IMPORT_PLUGIN(QWaylandEglClientBufferPlugin)
 Q_IMPORT_PLUGIN(QWaylandWlShellIntegrationPlugin)
 Q_IMPORT_PLUGIN(QWaylandBradientDecorationPlugin)
-Q_IMPORT_PLUGIN(QWaylandIntegrationPlugin)
-Q_IMPORT_PLUGIN(QWaylandEglPlatformIntegrationPlugin)
 #endif // !DESKTOP_APP_DISABLE_WAYLAND_INTEGRATION
 #endif // Q_OS_WIN | Q_OS_MAC | Q_OS_UNIX
 #endif // !DESKTOP_APP_USE_PACKAGED
@@ -54,9 +53,4 @@ Q_IMPORT_PLUGIN(QFcitx5PlatformInputContextPlugin)
 Q_IMPORT_PLUGIN(QHimePlatformInputContextPlugin)
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 #endif // !DESKTOP_APP_USE_PACKAGED || DESKTOP_APP_USE_PACKAGED_LAZY
-
-#if !defined DESKTOP_APP_USE_PACKAGED || defined DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES
-Q_IMPORT_PLUGIN(Qt5CTPlatformThemePlugin)
-Q_IMPORT_PLUGIN(Qt5CTStylePlugin)
-#endif // !DESKTOP_APP_USE_PACKAGED || DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES
 #endif // Q_OS_UNIX && !Q_OS_MAC
diff --git a/external/qt5ct_support/CMakeLists.txt b/external/qt5ct_support/CMakeLists.txt
deleted file mode 100644
index eea85e2..0000000
--- a/external/qt5ct_support/CMakeLists.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-# This file is part of Desktop App Toolkit,
-# a set of libraries for developing nice desktop applications.
-#
-# For license and copyright information please follow this link:
-# https://github.com/desktop-app/legal/blob/master/LEGAL
-
-add_library(external_qt5ct_support INTERFACE IMPORTED GLOBAL)
-add_library(desktop-app::external_qt5ct_support ALIAS external_qt5ct_support)
-
-add_subdirectory(qt5ct)
-add_subdirectory(qt5ct_qtplugin)
-add_subdirectory(qt5ct_style)
-
-target_link_libraries(external_qt5ct_support
-INTERFACE
-    desktop-app::external_qt5ct_style
-    desktop-app::external_qt5ct_qtplugin
-)
diff --git a/external/qt5ct_support/qt5ct/CMakeLists.txt b/external/qt5ct_support/qt5ct/CMakeLists.txt
deleted file mode 100644
index 44df85e..0000000
--- a/external/qt5ct_support/qt5ct/CMakeLists.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-# This file is part of Desktop App Toolkit,
-# a set of libraries for developing nice desktop applications.
-#
-# For license and copyright information please follow this link:
-# https://github.com/desktop-app/legal/blob/master/LEGAL
-
-if (DESKTOP_APP_USE_PACKAGED AND NOT DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES)
-    add_library(external_qt5ct INTERFACE IMPORTED GLOBAL)
-    add_library(desktop-app::external_qt5ct ALIAS external_qt5ct)
-else()
-    add_library(external_qt5ct STATIC)
-    add_library(desktop-app::external_qt5ct ALIAS external_qt5ct)
-    init_target(external_qt5ct "(external)")
-
-    set(qt5ct_loc ${third_party_loc}/qt5ct)
-    set(qt5ct_src ${qt5ct_loc}/src/qt5ct)
-
-    set_target_properties(external_qt5ct PROPERTIES AUTOMOC ON)
-
-    nice_target_sources(external_qt5ct ${qt5ct_src}
-    PRIVATE
-        qt5ct.cpp
-        qt5ct.h
-    )
-
-    target_include_directories(external_qt5ct
-    PRIVATE
-        ${qt5ct_src}
-    )
-
-    target_include_directories(external_qt5ct
-    PUBLIC
-        ${qt5ct_loc}/src
-    )
-
-    target_link_libraries(external_qt5ct
-    PRIVATE
-        desktop-app::external_qt
-    )
-endif()
diff --git a/external/qt5ct_support/qt5ct_qtplugin/CMakeLists.txt b/external/qt5ct_support/qt5ct_qtplugin/CMakeLists.txt
deleted file mode 100644
index 53de315..0000000
--- a/external/qt5ct_support/qt5ct_qtplugin/CMakeLists.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-# This file is part of Desktop App Toolkit,
-# a set of libraries for developing nice desktop applications.
-#
-# For license and copyright information please follow this link:
-# https://github.com/desktop-app/legal/blob/master/LEGAL
-
-if (DESKTOP_APP_USE_PACKAGED AND NOT DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES)
-    add_library(external_qt5ct_qtplugin INTERFACE IMPORTED GLOBAL)
-    add_library(desktop-app::external_qt5ct_qtplugin ALIAS external_qt5ct_qtplugin)
-else()
-    add_library(external_qt5ct_qtplugin STATIC)
-    add_library(desktop-app::external_qt5ct_qtplugin ALIAS external_qt5ct_qtplugin)
-    init_target(external_qt5ct_qtplugin "(external)")
-
-    set(qt5ct_loc ${third_party_loc}/qt5ct)
-    set(qt5ct_qtplugin_src ${qt5ct_loc}/src/qt5ct-qtplugin)
-
-    set_target_properties(external_qt5ct_qtplugin PROPERTIES AUTOMOC ON)
-
-    nice_target_sources(external_qt5ct_qtplugin ${qt5ct_qtplugin_src}
-    PRIVATE
-        main.cpp
-        qt5ctplatformtheme.cpp
-        qt5ctplatformtheme.h
-    )
-
-    target_include_directories(external_qt5ct_qtplugin
-    PRIVATE
-        ${qt5ct_qtplugin_src}
-    )
-
-    target_compile_definitions(external_qt5ct_qtplugin
-    PRIVATE
-        QT_STATICPLUGIN
-    )
-
-    target_link_libraries(external_qt5ct_qtplugin
-    PRIVATE
-        desktop-app::external_qt5ct
-        desktop-app::external_qt
-    )
-endif()
diff --git a/external/qt5ct_support/qt5ct_style/CMakeLists.txt b/external/qt5ct_support/qt5ct_style/CMakeLists.txt
deleted file mode 100644
index 4cb2da7..0000000
--- a/external/qt5ct_support/qt5ct_style/CMakeLists.txt
+++ /dev/null
@@ -1,42 +0,0 @@
-# This file is part of Desktop App Toolkit,
-# a set of libraries for developing nice desktop applications.
-#
-# For license and copyright information please follow this link:
-# https://github.com/desktop-app/legal/blob/master/LEGAL
-
-if (DESKTOP_APP_USE_PACKAGED AND NOT DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES)
-    add_library(external_qt5ct_style INTERFACE IMPORTED GLOBAL)
-    add_library(desktop-app::external_qt5ct_style ALIAS external_qt5ct_style)
-else()
-    add_library(external_qt5ct_style STATIC)
-    add_library(desktop-app::external_qt5ct_style ALIAS external_qt5ct_style)
-    init_target(external_qt5ct_style "(external)")
-
-    set(qt5ct_loc ${third_party_loc}/qt5ct)
-    set(qt5ct_style_src ${qt5ct_loc}/src/qt5ct-style)
-
-    set_target_properties(external_qt5ct_style PROPERTIES AUTOMOC ON)
-
-    nice_target_sources(external_qt5ct_style ${qt5ct_style_src}
-    PRIVATE
-        plugin.cpp
-        qt5ctproxystyle.cpp
-        qt5ctproxystyle.h
-    )
-
-    target_include_directories(external_qt5ct_style
-    PRIVATE
-        ${qt5ct_style_src}
-    )
-
-    target_compile_definitions(external_qt5ct_style
-    PRIVATE
-        QT_STATICPLUGIN
-    )
-
-    target_link_libraries(external_qt5ct_style
-    PRIVATE
-        desktop-app::external_qt5ct
-        desktop-app::external_qt
-    )
-endif()
diff --git a/options.cmake b/options.cmake
index 82fb6e3..6cd9093 100644
--- a/options.cmake
+++ b/options.cmake
@@ -63,13 +63,6 @@ if (DESKTOP_APP_USE_PACKAGED_LAZY)
     )
 endif()
 
-if (DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES)
-    target_compile_definitions(common_options
-    INTERFACE
-        DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES
-    )
-endif()
-
 if (DESKTOP_APP_USE_PACKAGED_FONTS)
     target_compile_definitions(common_options
     INTERFACE
diff --git a/variables.cmake b/variables.cmake
index 7a6eeb9..5c19c2c 100644
--- a/variables.cmake
+++ b/variables.cmake
@@ -36,7 +36,6 @@ option(DESKTOP_APP_USE_GLIBC_WRAPS "Use wraps for new GLIBC features." OFF)
 option(DESKTOP_APP_USE_ALLOCATION_TRACER "Use simple allocation tracer (Linux only)." OFF)
 option(DESKTOP_APP_USE_PACKAGED "Find libraries using CMake instead of exact paths." ${no_special_target})
 option(DESKTOP_APP_USE_PACKAGED_LAZY "Bundle recommended Qt plugins for self-contained packages. (Linux only)" OFF)
-option(DESKTOP_APP_USE_PACKAGED_LAZY_PLATFORMTHEMES "Bundle recommended Qt platform themes for self-contained packages. (Linux only)" ${DESKTOP_APP_USE_PACKAGED_LAZY})
 option(DESKTOP_APP_USE_PACKAGED_FFMPEG_STATIC "Link ffmpeg statically in packaged mode." OFF)
 option(DESKTOP_APP_DISABLE_SPELLCHECK "Disable spellcheck library." ${osx_special_target})
 option(DESKTOP_APP_DISABLE_CRASH_REPORTS "Disable crash report generation." ${no_special_target})
@@ -44,7 +43,6 @@ option(DESKTOP_APP_DISABLE_AUTOUPDATE "Disable autoupdate." ${disable_autoupdate
 option(DESKTOP_APP_USE_HUNSPELL_ONLY "Disable system spellchecker and use bundled Hunspell only. (For debugging purposes)" OFF)
 option(DESKTOP_APP_USE_ENCHANT "Use Enchant instead of bundled Hunspell. (Linux only)" OFF)
 option(DESKTOP_APP_NO_PDB "Disable PDB file generation. (Windows only)" OFF)
-set(DESKTOP_APP_QTWAYLANDCLIENT_PRIVATE_HEADERS "" CACHE STRING "QtWaylandClient headers location.")
 
 set(dont_bundle_fonts 0)
 if (DESKTOP_APP_USE_PACKAGED AND NOT DESKTOP_APP_USE_PACKAGED_LAZY)