diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9023b53..1167c7d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ set(CMAKE_USE_RELATIVE_PATHS OFF)
 set(CMAKE_BUILD_WITH_INSTALL_RPATH ON)
 
 # Dependencies
-set(QT_MIN_VERSION "5.14.0")
+set(QT_MIN_VERSION "5.15.0")
 set(KF5_MIN_VERSION "5.88")
 set(BLKID_MIN_VERSION "2.33.2")
 # PolkitQt5-1
@@ -49,7 +49,11 @@ ecm_setup_version(${RELEASE_SERVICE_VERSION} VARIABLE_PREFIX KPMCORE
                         PACKAGE_VERSION_FILE "${CMAKE_CURRENT_BINARY_DIR}/KPMcoreConfigVersion.cmake"
                         SOVERSION ${SOVERSION})
 
-find_package(Qt5 ${QT_MIN_VERSION} CONFIG REQUIRED COMPONENTS
+if (NOT QT_MAJOR_VERSION)
+    set(QT_MAJOR_VERSION "5")
+endif()
+
+find_package(Qt${QT_MAJOR_VERSION} ${QT_MIN_VERSION} COMPONENTS REQUIRED
   Core
   DBus
   Gui
@@ -63,7 +67,7 @@ find_package(KF5 ${KF5_MIN_VERSION} REQUIRED
   WidgetsAddons
 )
 
-find_package(PolkitQt5-1 REQUIRED)
+find_package(PolkitQt${QT_MAJOR_VERSION}-1 REQUIRED)
 
 # use sane compile flags
 add_definitions(
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index eb343f2..22e4405 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -33,11 +33,11 @@ ki18n_wrap_ui(kpmcore_SRCS ${gui_UIFILES})
 
 add_library(kpmcore SHARED ${kpmcore_SRCS})
 target_link_libraries( kpmcore PUBLIC
-    Qt5::Core
+    Qt${QT_MAJOR_VERSION}::Core
     PRIVATE
     ${BLKID_LIBRARIES}
-    Qt5::DBus
-    Qt5::Gui
+    Qt${QT_MAJOR_VERSION}::DBus
+    Qt${QT_MAJOR_VERSION}::Gui
     KF5::I18n
     KF5::CoreAddons
     KF5::WidgetsAddons
diff --git a/src/util/CMakeLists.txt b/src/util/CMakeLists.txt
index f22f48f..afc4824 100644
--- a/src/util/CMakeLists.txt
+++ b/src/util/CMakeLists.txt
@@ -11,19 +11,19 @@
 
 set(helper_interface_xml org.kde.kpmcore.helperinterface.xml)
 
-qt5_generate_dbus_interface(
+qt_generate_dbus_interface(
     util/externalcommand.h
     ${application_interface_xml}
     OPTIONS -a
 )
 
-qt5_generate_dbus_interface(
+qt_generate_dbus_interface(
     util/externalcommandhelper.h
     ${helper_interface_xml}
     OPTIONS -a
 )
 
-qt5_add_dbus_interface(HelperInterface_SRCS ${CMAKE_CURRENT_BINARY_DIR}/${helper_interface_xml} externalcommandhelper_interface)
+qt_add_dbus_interface(HelperInterface_SRCS ${CMAKE_CURRENT_BINARY_DIR}/${helper_interface_xml} externalcommandhelper_interface)
 
 set(UTIL_SRC
     ${HelperInterface_SRCS}
@@ -49,10 +49,10 @@ add_executable(kpmcore_externalcommand
 )
 
 target_link_libraries(kpmcore_externalcommand
-    Qt5::Core
-    Qt5::DBus
+    Qt${QT_MAJOR_VERSION}::Core
+    Qt${QT_MAJOR_VERSION}::DBus
     KF5::I18n
-    PolkitQt5-1::Core
+    PolkitQt${QT_MAJOR_VERSION}-1::Core
 )
 
 install(TARGETS kpmcore_externalcommand DESTINATION ${KDE_INSTALL_LIBEXECDIR})
diff --git a/src/util/externalcommandhelper.cpp b/src/util/externalcommandhelper.cpp
index 0fa400d..62290b0 100644
--- a/src/util/externalcommandhelper.cpp
+++ b/src/util/externalcommandhelper.cpp
@@ -309,7 +309,11 @@ QVariantMap ExternalCommandHelper::RunCommand(const QString& command, const QStr
     if (!isCallerAuthorized()) {
         return {};
     }
+
+#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
     QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));
+#endif
+
     QVariantMap reply;
     reply[QStringLiteral("success")] = true;
 
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 9ae6473..262c38f 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -26,7 +26,7 @@ target_link_libraries(testhelpers PRIVATE kpmcore)
 
 macro (kpm_test name)
     add_executable(${name} ${ARGN})
-    target_link_libraries(${name} testhelpers kpmcore Qt5::Core)
+    target_link_libraries(${name} testhelpers kpmcore Qt${QT_MAJOR_VERSION}::Core)
 endmacro()
 
 ###