diff --git a/AutoTests/CMakeLists.txt b/AutoTests/CMakeLists.txt
index 7efab90..aeeef76 100644
--- a/AutoTests/CMakeLists.txt
+++ b/AutoTests/CMakeLists.txt
@@ -1,13 +1,13 @@
 enable_testing()
-find_package(Qt5Test 5.3.0 REQUIRED NO_MODULE)
+find_package(Qt6Test REQUIRED NO_MODULE)
 
-qt5_add_resources(TestDataResources_SRCS TestData.qrc)
+qt6_add_resources(TestDataResources_SRCS TestData.qrc)
 
 ########### next target ###############
 
 set(ParserTests_SRCS tst_ParserTests.cpp TestHelpers.cpp ${TestDataResources_SRCS})
 add_executable(OrgModeParser_ParserTests ${ParserTests_SRCS})
-target_link_libraries(OrgModeParser_ParserTests Qt5::Test OrgModeParser)
+target_link_libraries(OrgModeParser_ParserTests Qt6::Test OrgModeParser)
 target_include_directories(OrgModeParser_ParserTests PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
 add_test(OrgModeParser_ParserTests OrgModeParser_ParserTests)
 set_target_properties(OrgModeParser_ParserTests PROPERTIES MACOSX_BUNDLE FALSE)
@@ -17,7 +17,7 @@ set_property(TARGET OrgModeParser_ParserTests PROPERTY CXX_STANDARD 11)
 
 set(ClockTests_SRCS tst_ClockTests.cpp TestHelpers.cpp ${TestDataResources_SRCS})
 add_executable(OrgModeParser_ClockTests ${ClockTests_SRCS})
-target_link_libraries(OrgModeParser_ClockTests Qt5::Test OrgModeParser)
+target_link_libraries(OrgModeParser_ClockTests Qt6::Test OrgModeParser)
 target_include_directories(OrgModeParser_ClockTests PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
 add_test(OrgModeParser_ClockTests OrgModeParser_ClockTests)
 set_target_properties(OrgModeParser_ClockTests PROPERTIES MACOSX_BUNDLE FALSE)
@@ -27,7 +27,7 @@ set_property(TARGET OrgModeParser_ClockTests PROPERTY CXX_STANDARD 11)
 
 set(Benchmarks_SRCS tst_Benchmarks.cpp TestHelpers.cpp ${TestDataResources_SRCS})
 add_executable(OrgModeParser_Benchmarks ${Benchmarks_SRCS})
-target_link_libraries(OrgModeParser_Benchmarks Qt5::Test OrgModeParser)
+target_link_libraries(OrgModeParser_Benchmarks Qt6::Test OrgModeParser)
 target_include_directories(OrgModeParser_Benchmarks PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
 add_test(OrgModeParser_Benchmarks OrgModeParser_Benchmarks)
 set_target_properties(OrgModeParser_Benchmarks PROPERTIES MACOSX_BUNDLE FALSE)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 929a256..e2bdb38 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
 project(OrgModeParser)
 
 include(GenerateExportHeader)
-find_package(Qt5Core 5.3.0 REQUIRED NO_MODULE)
+find_package(Qt6Core REQUIRED NO_MODULE)
 enable_testing()
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
diff --git a/Parser/Attributes.cpp b/Parser/Attributes.cpp
index 508cc36..f74bb69 100644
--- a/Parser/Attributes.cpp
+++ b/Parser/Attributes.cpp
@@ -98,7 +98,7 @@ const QStringList Attributes::drawerNames() const
     static const QStringList defaults = QStringList() << QStringLiteral("PROPERTIES");
     try {
         const QString drawersAttribute = fileAttribute(QString::fromLatin1("DRAWERS"));
-        const QStringList names = drawersAttribute.split(QRegExp(QLatin1String("\\s+")));
+        const QStringList names = drawersAttribute.split(QRegularExpression(QLatin1String("\\s+")));
         return defaults + names;
     } catch (const RuntimeException&) {
         // No drawer attribute defined:
diff --git a/Parser/CMakeLists.txt b/Parser/CMakeLists.txt
index f6226a0..31e84f5 100644
--- a/Parser/CMakeLists.txt
+++ b/Parser/CMakeLists.txt
@@ -34,7 +34,7 @@ set(CMAKE_CXX_VISIBILITY_PRESET hidden)
 set(CMAKE_VISIBILITY_INLINES_HIDDEN 1)
 add_library(OrgModeParser SHARED ${OrgModeParser_LIB_SRCS})
 generate_export_header(OrgModeParser)
-target_link_libraries(OrgModeParser PUBLIC Qt5::Core)
+target_link_libraries(OrgModeParser PUBLIC Qt6::Core)
 target_include_directories(OrgModeParser PUBLIC ${CMAKE_CURRENT_BINARY_DIR})
 target_include_directories(OrgModeParser PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 set_property(TARGET OrgModeParser PROPERTY CXX_STANDARD 14)
diff --git a/README.md b/README.md
index 16989d2..200604a 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ possibilities are endless.
 
 ### Installation
 
-OrgModeParser requires Qt 5.3 and CMake 3.2. Newer versions should
+OrgModeParser requires Qt 6.0 and CMake 3.2. Newer versions should
 work as well. On most Linux distributions, shipped packages should be
 fine. Installation is straight-forward:
 
@@ -95,4 +95,4 @@ the tests, go to the build directory and run `make test`.
 To fix or extend the functionality of OrgModeParser, provide examples
 of Org files and specify where OrgModeParser parses it wrong or does
 not implement features. When submitting pull requests on
-Github. remember every new piece of code needs to be auto-tested.
+Github. Remember every new piece of code needs to be auto-tested.