diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,6 +77,7 @@ qt5_wrap_ui(UI_FILES
   src/binarystreamreadersettings.ui
   src/asciireadersettings.ui
   src/framedreadersettings.ui
+  src/updatecheckdialog.ui
   )
 
 if (WIN32)
@@ -126,6 +127,9 @@ add_executable(${PROGRAM_NAME} WIN32
   src/framedreadersettings.cpp
   src/plotmanager.cpp
   src/numberformat.cpp
+  src/updatechecker.cpp
+  src/versionnumber.cpp
+  src/updatecheckdialog.cpp
   misc/windows_icon.rc
   ${UI_FILES}
   ${RES_FILES}
@@ -136,7 +140,7 @@ target_link_libraries(${PROGRAM_NAME}
   ${QWT_LIBRARY}
   ${QTCOLORWIDGETS_LIBRARIES}
   )
-qt5_use_modules(${PROGRAM_NAME} Widgets SerialPort)
+qt5_use_modules(${PROGRAM_NAME} Widgets SerialPort Network)
 
 if (BUILD_QWT)
   add_dependencies(${PROGRAM_NAME} QWT)
@@ -169,6 +173,9 @@ set(VERSION_REVISION "0")
 include(GetVersion)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVERSION_STRING=\\\"${VERSION_STRING}\\\" ")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVERSION_MAJOR=${VERSION_MAJOR} ")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVERSION_MINOR=${VERSION_MINOR} ")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVERSION_PATCH=${VERSION_PATCH} ")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DVERSION_REVISION=\\\"${VERSION_REVISION}\\\" ")
 
 # add make run target