diff --git a/cmake-library b/cmake-library
index bb48fc24..6f6d0149 160000
--- a/cmake-library
+++ b/cmake-library
@@ -1 +1 @@
-Subproject commit bb48fc24f4910a39dc2182fc250c998810ca041c
+Subproject commit 6f6d014958f62516be5a3d18d114733d661f63f8
diff --git a/src/OpenMesh/Apps/CMakeLists.txt b/src/OpenMesh/Apps/CMakeLists.txt
index 47468239..ebf10ff9 100644
--- a/src/OpenMesh/Apps/CMakeLists.txt
+++ b/src/OpenMesh/Apps/CMakeLists.txt
@@ -48,6 +48,9 @@ if ( BUILD_APPS )
         OpenGL
         Gui
         )
+      set(QT6_REQUIRED_PACKAGES
+        OpenGLWidgets
+        )
       vci_qt ()
       set(CMAKE_AUTOMOC ON)
     endif()
diff --git a/src/OpenMesh/Apps/Decimating/DecimaterGui/CMakeLists.txt b/src/OpenMesh/Apps/Decimating/DecimaterGui/CMakeLists.txt
index 303a325a..d6230e7e 100644
--- a/src/OpenMesh/Apps/Decimating/DecimaterGui/CMakeLists.txt
+++ b/src/OpenMesh/Apps/Decimating/DecimaterGui/CMakeLists.txt
@@ -30,6 +30,12 @@ target_link_libraries (DecimaterGui
   OpenMeshCore
   OpenMeshTools
   ${QT_TARGET}::OpenGL
+  ${QT_TARGET}::Widgets
+  ${QT_TARGET}::Gui
   ${OPENGL_LIBRARIES}
 )
 
+if (QT_VERSION_MAJOR GREATER 5)
+  target_link_libraries (DecimaterGui ${QT_TARGET}::OpenGLWidgets)
+endif()
+
diff --git a/src/OpenMesh/Apps/ProgViewer/CMakeLists.txt b/src/OpenMesh/Apps/ProgViewer/CMakeLists.txt
index 95b69568..2a3e2daf 100644
--- a/src/OpenMesh/Apps/ProgViewer/CMakeLists.txt
+++ b/src/OpenMesh/Apps/ProgViewer/CMakeLists.txt
@@ -29,6 +29,12 @@ target_link_libraries ( ProgViewer
   OpenMeshCore
   OpenMeshTools
   ${QT_TARGET}::OpenGL
+  ${QT_TARGET}::Widgets
+  ${QT_TARGET}::Gui
   ${OPENGL_LIBRARIES}
 )
 
+if (QT_VERSION_MAJOR GREATER 5)
+  target_link_libraries (ProgViewer ${QT_TARGET}::OpenGLWidgets)
+endif()
+
diff --git a/src/OpenMesh/Apps/QtViewer/CMakeLists.txt b/src/OpenMesh/Apps/QtViewer/CMakeLists.txt
index 4c14e5a5..38fb3e33 100644
--- a/src/OpenMesh/Apps/QtViewer/CMakeLists.txt
+++ b/src/OpenMesh/Apps/QtViewer/CMakeLists.txt
@@ -31,6 +31,12 @@ target_link_libraries (QtViewer
   OpenMeshCore
   OpenMeshTools
   ${QT_TARGET}::OpenGL
+  ${QT_TARGET}::Widgets
+  ${QT_TARGET}::Gui
   ${OPENGL_LIBRARIES}
 )
 
+if (QT_VERSION_MAJOR GREATER 5)
+  target_link_libraries (QtViewer ${QT_TARGET}::OpenGLWidgets)
+endif()
+
diff --git a/src/OpenMesh/Apps/Subdivider/SubdividerGui/CMakeLists.txt b/src/OpenMesh/Apps/Subdivider/SubdividerGui/CMakeLists.txt
index 57145ea5..b981841b 100644
--- a/src/OpenMesh/Apps/Subdivider/SubdividerGui/CMakeLists.txt
+++ b/src/OpenMesh/Apps/Subdivider/SubdividerGui/CMakeLists.txt
@@ -29,6 +29,11 @@ target_link_libraries (SubdividerGui
   OpenMeshCore
   OpenMeshTools
   ${QT_TARGET}::OpenGL
+  ${QT_TARGET}::Widgets
+  ${QT_TARGET}::Gui
   ${OPENGL_LIBRARIES}
 )
 
+if (QT_VERSION_MAJOR GREATER 5)
+  target_link_libraries (SubdividerGui ${QT_TARGET}::OpenGLWidgets)
+endif()
diff --git a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/CMakeLists.txt b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/CMakeLists.txt
index 68f731e5..1cc83663 100644
--- a/src/OpenMesh/Apps/VDProgMesh/Synthesizer/CMakeLists.txt
+++ b/src/OpenMesh/Apps/VDProgMesh/Synthesizer/CMakeLists.txt
@@ -26,5 +26,11 @@ target_link_libraries (Synthesizer
   OpenMeshCore
   OpenMeshTools
   ${QT_TARGET}::OpenGL
+  ${QT_TARGET}::Widgets
+  ${QT_TARGET}::Gui
   ${OPENGL_LIBRARIES}
 )
+
+if (QT_VERSION_MAJOR GREATER 5)
+  target_link_libraries (Synthesizer ${QT_TARGET}::OpenGLWidgets)
+endif()