diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7ccf52e64..495893a20 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,244 +1,244 @@
 # SPDX-FileCopyrightText: none
 # SPDX-License-Identifier: BSD-3-Clause
 cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
 
 set(RELEASE_SERVICE_VERSION_MAJOR "25")
 set(RELEASE_SERVICE_VERSION_MINOR "03")
 set(RELEASE_SERVICE_VERSION_MICRO "90")
 
 # The RELEASE_SERVICE_VERSION is used by Gpg4win to add the Gpg4win version
 if (NOT RELEASE_SERVICE_VERSION)
     set(RELEASE_SERVICE_VERSION "${RELEASE_SERVICE_VERSION_MAJOR}.${RELEASE_SERVICE_VERSION_MINOR}.${RELEASE_SERVICE_VERSION_MICRO}")
 endif()
 if(RELEASE_SERVICE_VERSION_MICRO LESS 10)
     set(KDE_APPLICATIONS_COMPACT_VERSION "${RELEASE_SERVICE_VERSION_MAJOR}${RELEASE_SERVICE_VERSION_MINOR}0${RELEASE_SERVICE_VERSION_MICRO}")
 else()
     set(KDE_APPLICATIONS_COMPACT_VERSION "${RELEASE_SERVICE_VERSION_MAJOR}${RELEASE_SERVICE_VERSION_MINOR}${RELEASE_SERVICE_VERSION_MICRO}")
 endif()
 
 set(KLEOPATRA_VERSION_MAJOR "4")
 set(KLEOPATRA_VERSION_MINOR "0")
 set(KLEOPATRA_VERSION_MICRO "0")
 
 set(kleopatra_version "${KLEOPATRA_VERSION_MAJOR}.${KLEOPATRA_VERSION_MINOR}.${KLEOPATRA_VERSION_MICRO}.${KDE_APPLICATIONS_COMPACT_VERSION}")
 # The following is for Windows
 set(kleopatra_version_win "${KLEOPATRA_VERSION_MAJOR}.${KLEOPATRA_VERSION_MINOR}.${KLEOPATRA_VERSION_MICRO}")
 set(kleopatra_fileversion_win "${KLEOPATRA_VERSION_MAJOR},${KLEOPATRA_VERSION_MINOR},${KLEOPATRA_VERSION_MICRO},0")
 if (NOT KLEOPATRA_DISTRIBUTION_TEXT)
     # This is only used on Windows for the file attributes of Kleopatra
     set(KLEOPATRA_DISTRIBUTION_TEXT "KDE")
 endif()
 if (NOT KLEOPATRA_APPLICATION_NAME)
     # This is used to allow multiple flavors of Kleopatra to run at the same time on Windows
     set(KLEOPATRA_APPLICATION_NAME "kleopatra")
 endif()
 
 project(kleopatra VERSION ${kleopatra_version})
 
 option(DISABLE_KWATCHGNUPG "Don't build the kwatchgnupg tool [default=OFF]" OFF)
 
 # Standalone build. Find / include everything necessary.
 set(KF_MIN_VERSION "6.9.0")
-set(KIDENTITYMANAGEMENT_VERSION "6.3.90")
-set(KMAILTRANSPORT_VERSION "6.3.90")
-set(AKONADI_MIME_VERSION "6.3.90")
-set(KMIME_VERSION "6.3.90")
-set(LIBKLEO_VERSION "6.3.90")
+set(KIDENTITYMANAGEMENT_VERSION "6.4.0")
+set(KMAILTRANSPORT_VERSION "6.4.0")
+set(AKONADI_MIME_VERSION "6.4.0")
+set(KMIME_VERSION "6.4.0")
+set(LIBKLEO_VERSION "6.4.0")
 set(QT_REQUIRED_VERSION "6.7.0")
-set(MIMETREEPARSER_VERSION "6.3.90")
+set(MIMETREEPARSER_VERSION "6.4.0")
 set(GPGME_REQUIRED_VERSION "1.23.2")
 set(LIBASSUAN_REQUIRED_VERSION "2.4.2")
 set(GPG_ERROR_REQUIRED_VERSION "1.36")
 
 if (WIN32)
   set(KF6_WANT_VERSION ${KF_MIN_VERSION})
   set(KMIME_WANT_VERSION ${KMIME_VERSION})
 else ()
   set(KF6_WANT_VERSION ${KF_MIN_VERSION})
   set(KMIME_WANT_VERSION ${KMIME_VERSION})
 endif ()
 
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 find_package(ECM ${KF6_WANT_VERSION} CONFIG REQUIRED)
 set(CMAKE_MODULE_PATH ${ECM_MODULE_PATH})
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake/modules ${CMAKE_MODULE_PATH})
 
 include(ECMInstallIcons)
 include(ECMSetupVersion)
 include(ECMAddTests)
 include(GenerateExportHeader)
 include(ECMGenerateHeaders)
 include(CheckFunctionExists)
 include(KDEInstallDirs)
 include(KDECMakeSettings)
 include(KDECompilerSettings NO_POLICY_SCOPE)
 include(ECMAddAppIcon)
 include(ECMQtDeclareLoggingCategory)
 include(ECMDeprecationSettings)
 include(ECMFeatureSummary)
 include(KDEClangFormat)
 include(KDEGitCommitHooks)
 
 # Find KF6 packages
 find_package(KF6 ${KF6_WANT_VERSION}
     REQUIRED COMPONENTS
     Codecs
     ColorScheme
     Config
     CoreAddons
     Crash
     I18n
     IconThemes
     ItemModels
     KIO
     WidgetsAddons
     WindowSystem
     XmlGui
 
     OPTIONAL_COMPONENTS
     DocTools
 )
 
 set_package_properties(KF6DocTools PROPERTIES
     DESCRIPTION "Documentation tools"
     PURPOSE "Required to generate Kleopatra documentation."
     TYPE OPTIONAL)
 
 # Optional packages
 if (WIN32)
   # Only a replacement available for Windows so this
   # is required on other platforms.
   find_package(KF6DBusAddons ${KF6_WANT_VERSION} CONFIG)
   set_package_properties(KF6DBusAddons PROPERTIES DESCRIPTION "Support library to work with DBus"
                          PURPOSE "DBus session integration"
                          TYPE OPTIONAL)
 else()
   find_package(KF6DBusAddons ${KF6_WANT_VERSION} CONFIG REQUIRED)
   set(_kleopatra_dbusaddons_libs KF6::DBusAddons)
 endif()
 
 set(HAVE_QDBUS ${Qt6DBus_FOUND})
 
 find_package(Gpgmepp ${GPGME_REQUIRED_VERSION} CONFIG REQUIRED)
 set(QGPGME_NAME "QGpgmeQt6")
 find_package(${QGPGME_NAME} ${GPGME_REQUIRED_VERSION} CONFIG REQUIRED)
 if (${QGPGME_NAME}_VERSION VERSION_GREATER_EQUAL "1.24.0")
     set(QGPGME_FILE_JOBS_SUPPORT_DIRECT_FILE_IO 1)
     set(QGPGME_IMPORT_JOB_SUPPORTS_IMPORT_OPTIONS 1)
     set(QGPGME_SUPPORTS_PROCESS_ALL_SIGNATURES 1)
 endif()
 
 find_package(KPim6Libkleo ${LIBKLEO_VERSION} CONFIG REQUIRED)
 find_package(KPim6Mime ${KMIME_WANT_VERSION} CONFIG REQUIRED)
 find_package(KPim6IdentityManagementCore ${KIDENTITYMANAGEMENT_VERSION} CONFIG)
 find_package(KPim6MailTransport ${KMAILTRANSPORT_VERSION} CONFIG)
 find_package(KPim6AkonadiMime ${AKONADI_MIME_VERSION} CONFIG)
 find_package(KPim6MimeTreeParserWidgets ${MIMETREEPARSER_VERSION} CONFIG REQUIRED)
 
 set(CMAKE_MODULE_PATH ${LIBKLEO_MODULE_PATH} ${CMAKE_MODULE_PATH})
 
 find_package(Qt6 ${QT_REQUIRED_VERSION} CONFIG REQUIRED Widgets Test Network PrintSupport)
 
 find_package(LibAssuan ${LIBASSUAN_REQUIRED_VERSION} REQUIRED)
 set_package_properties(LibAssuan PROPERTIES
   TYPE REQUIRED
   PURPOSE "Needed for Kleopatra to act as the GnuPG UI Server"
 )
 find_package(LibGpgError ${GPG_ERROR_REQUIRED_VERSION} REQUIRED)
 
 set(kleopatra_release FALSE)
 
 if(NOT kleopatra_release)
     find_package(Git)
     if(GIT_FOUND)
         execute_process(COMMAND ${GIT_EXECUTABLE} rev-parse
                         WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                         RESULT_VARIABLE rc
                         ERROR_QUIET)
         if(rc EQUAL 0)
             execute_process(COMMAND ${GIT_EXECUTABLE} log -1 --oneline --format=%h ${CMAKE_CURRENT_SOURCE_DIR}
                 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                 OUTPUT_VARIABLE Kleopatra_WC_REVISION)
             string(REGEX REPLACE "\n" "" Kleopatra_WC_REVISION "${Kleopatra_WC_REVISION}")
 
             execute_process(COMMAND ${GIT_EXECUTABLE} log -1 --oneline --format=%cI ${CMAKE_CURRENT_SOURCE_DIR}
                 WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
                 OUTPUT_VARIABLE Kleopatra_WC_LAST_CHANGED_DATE)
             string(REGEX REPLACE "^([0-9]+)-([0-9]+)-([0-9]+)T([0-9]+):([0-9]+):([0-9]+).*$" "\\1\\2\\3T\\4\\5\\6"
                    Kleopatra_WC_LAST_CHANGED_DATE "${Kleopatra_WC_LAST_CHANGED_DATE}")
 
             set(kleopatra_version "${kleopatra_version}+git${Kleopatra_WC_LAST_CHANGED_DATE}~${Kleopatra_WC_REVISION}")
         endif()
     endif()
 endif()
 
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/version-kleopatra.h.in ${CMAKE_CURRENT_BINARY_DIR}/version-kleopatra.h)
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config-kleopatra.h.in ${CMAKE_CURRENT_BINARY_DIR}/config-kleopatra.h)
 
 include_directories(
     ${CMAKE_CURRENT_BINARY_DIR}
     ${CMAKE_CURRENT_SOURCE_DIR}
 )
 
 add_definitions(-DQT_NO_CONTEXTLESS_CONNECT)
 ecm_set_disabled_deprecation_versions(QT 6.9.0 KF 6.12.0)
 
 if(CMAKE_COMPILER_IS_GNUCXX)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-braces -Wno-parentheses -Wno-ignored-qualifiers")
 endif()
 if(MINGW)
     # we do not care about different signedness of passed pointer arguments
     add_compile_options($<$<COMPILE_LANGUAGE:C>:-Wno-pointer-sign>)
 endif()
 
 add_definitions(-DQT_NO_EMIT)
 remove_definitions(-DQT_NO_FOREACH)
 
 # Disable the use of QStringBuilder for operator+ to prevent crashes when
 # returning the result of concatenating string temporaries in lambdas. We do
 # this for example in some std::transform expressions.
 # This is a known issue: https://bugreports.qt.io/browse/QTBUG-47066
 # Alternatively, one would always have to remember to force the lambdas to
 # return a QString instead of QStringBuilder, but that's just too easy to
 # forget and, unfortunately, the compiler doesn't issue a warning if one forgets
 # this. So, it's just too dangerous.
 # One can still use QStringBuilder explicitly with the operator% if necessary.
 remove_definitions(-DQT_USE_FAST_OPERATOR_PLUS)
 remove_definitions(-DQT_USE_QSTRINGBUILDER)
 
 kde_enable_exceptions()
 option(USE_UNITY_CMAKE_SUPPORT "Use UNITY cmake support (speedup compile time)" OFF)
 
 set(COMPILE_WITH_UNITY_CMAKE_SUPPORT OFF)
 if (USE_UNITY_CMAKE_SUPPORT)
     set(COMPILE_WITH_UNITY_CMAKE_SUPPORT ON)
 endif()
 
 
 add_subdirectory(src)
 
 if(BUILD_TESTING)
     add_subdirectory(tests)
     add_subdirectory(autotests)
 endif()
 
 ecm_qt_install_logging_categories(
         EXPORT KLEOPATRA
         FILE kleopatra.categories
         DESTINATION ${KDE_INSTALL_LOGGINGCATEGORIESDIR}
         )
 
 ki18n_install(po)
 if(KF6DocTools_FOUND)
     kdoctools_install(po)
     add_subdirectory(doc)
 endif()
 ecm_feature_summary(WHAT ALL FATAL_ON_MISSING_REQUIRED_PACKAGES)
 
 # add clang-format target for all our real source files
 file(GLOB_RECURSE ALL_CLANG_FORMAT_SOURCE_FILES *.cpp *.h *.c)
 kde_clang_format(${ALL_CLANG_FORMAT_SOURCE_FILES})
 kde_configure_git_pre_commit_hook(CHECKS CLANG_FORMAT)