diff --git a/karchivemanager/CMakeLists.txt b/karchivemanager/CMakeLists.txt
index 9c77b7d8..574553b5 100644
--- a/karchivemanager/CMakeLists.txt
+++ b/karchivemanager/CMakeLists.txt
@@ -3,8 +3,8 @@ project(karchivemanager)
 if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
     include(FeatureSummary)
 
-    find_package(KDE4 4.19.0 REQUIRED)
-    include(KDE4Defaults)
+    find_package(KDELibs4 4.23.0 REQUIRED)
+
     include_directories(${KDE4_INCLUDES})
     add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
 endif()
@@ -29,8 +29,8 @@ set(karchivemanager_sources
 
 add_executable(karchivemanager ${karchivemanager_sources})
 target_link_libraries(karchivemanager
-    ${KDE4_KDEUI_LIBS}
-    ${KDE4_KFILE_LIBS}
+    KDE4::kdeui
+    KDE4::kfile
     ${LibArchive_LIBRARIES}
 )
 
diff --git a/karchivemanager/karchiveapp.ui b/karchivemanager/karchiveapp.ui
index 19c01a41..7ced4104 100644
--- a/karchivemanager/karchiveapp.ui
+++ b/karchivemanager/karchiveapp.ui
@@ -122,6 +122,5 @@
    </property>
   </action>
  </widget>
- <resources/>
  <connections/>
 </ui>
diff --git a/karchivemanager/main.cpp b/karchivemanager/main.cpp
index 201fdb48..ec82b5fe 100644
--- a/karchivemanager/main.cpp
+++ b/karchivemanager/main.cpp
@@ -27,13 +27,12 @@ int main(int argc, char** argv)
 {
     QApplication::setAttribute(Qt::AA_X11InitThreads, true);
 
-    KAboutData aboutData("karchivemanager", 0, ki18n("Archive Manager"),
-                         "1.0.0", ki18n("Simple archive manager for KDE."),
-                         KAboutData::License_GPL_V2,
-                         ki18n("(c) 2018 Ivailo Monev"),
-                         KLocalizedString(),
-                        "http://github.com/fluxer/katana"
-                        );
+    KAboutData aboutData(
+        "karchivemanager", 0, ki18n("Archive Manager"),
+        "1.0.0", ki18n("Simple archive manager for KDE."),
+        KAboutData::License_GPL_V2,
+        ki18n("(c) 2018 Ivailo Monev")
+    );
 
     aboutData.addAuthor(ki18n("Ivailo Monev"),
                         ki18n("Maintainer"),
diff --git a/kman/main.cpp b/kman/main.cpp
index 54b77a60..b50df050 100644
--- a/kman/main.cpp
+++ b/kman/main.cpp
@@ -24,13 +24,12 @@
 
 int main(int argc, char** argv)
 {
-    KAboutData aboutData("kman", 0, ki18n("KMan"),
-                         "1.0.0", ki18n("Simple manual page reader for KDE."),
-                         KAboutData::License_GPL_V2,
-                         ki18n("(c) 2018 Ivailo Monev"),
-                         KLocalizedString(),
-                        "http://github.com/fluxer/katana"
-                        );
+    KAboutData aboutData(
+        "kman", 0, ki18n("KMan"),
+        "1.0.0", ki18n("Simple manual page reader for KDE."),
+        KAboutData::License_GPL_V2,
+        ki18n("(c) 2018 Ivailo Monev")
+    );
 
     aboutData.addAuthor(ki18n("Ivailo Monev"),
                         ki18n("Maintainer"),
diff --git a/kupdatenotifier/CMakeLists.txt b/kupdatenotifier/CMakeLists.txt
index f645f196..297c9f48 100644
--- a/kupdatenotifier/CMakeLists.txt
+++ b/kupdatenotifier/CMakeLists.txt
@@ -1,8 +1,10 @@
 project(kupdatenotifier)
 
 if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
-    find_package(KDE4 4.21.0 REQUIRED)
-    include(KDE4Defaults)
+    include(FeatureSummary)
+
+    find_package(KDELibs4 4.23.0 REQUIRED)
+
     include_directories(${KDE4_INCLUDES})
     add_definitions(${QT_DEFINITIONS} ${KDE4_DEFINITIONS})
 endif()
@@ -16,9 +18,12 @@ set(kupdatenotifier_SRCS
 
 add_executable(kupdatenotifier ${kupdatenotifier_SRCS})
 
-target_link_libraries(kupdatenotifier ${KDE4_KDEUI_LIBS})
+target_link_libraries(kupdatenotifier KDE4::kdeui)
 
-install(TARGETS kupdatenotifier ${INSTALL_TARGETS_DEFAULT_ARGS})
+install(
+    TARGETS kupdatenotifier
+    DESTINATION ${KDE4_BIN_INSTALL_DIR}
+)
 
 ########### next target ###############
 
diff --git a/kupdatenotifier/main.cpp b/kupdatenotifier/main.cpp
index f341e67f..a97a6ed6 100644
--- a/kupdatenotifier/main.cpp
+++ b/kupdatenotifier/main.cpp
@@ -31,9 +31,7 @@ int main(int argc, char** argv)
         "kupdatenotifier", 0, ki18n("KUpdateNotifier"),
         "1.0.0", ki18n("A panel applet for software updates notification."),
         KAboutData::License_GPL_V2,
-        ki18n("(c) 2022 Ivailo Monev"),
-        KLocalizedString(),
-        "http://github.com/fluxer/katana"
+        ki18n("(c) 2022 Ivailo Monev")
     );
 
     aboutData.addAuthor(
@@ -44,7 +42,6 @@ int main(int argc, char** argv)
     aboutData.setProgramIconName(QLatin1String("system-software-update"));
 
     KCmdLineArgs::init(argc, argv, &aboutData);
-    KUniqueApplication::addCmdLineOptions();
 
     KUniqueApplication kupdatenotifierapp;
     kupdatenotifierapp.setQuitOnLastWindowClosed(false);