--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,12 +36,16 @@
 ENDIF(WIN32)
 
 FIND_PACKAGE( OpenCV REQUIRED core highgui imgproc )
-FIND_PACKAGE(Qt4 REQUIRED)
-FIND_PACKAGE(GIF REQUIRED)
+FIND_PACKAGE(Qt5Core REQUIRED)
+
+FIND_LIBRARY(GIF REQUIRED)
+#FIND_LIBRARY(GIF 4 EXACT REQUIRED HINTS /usr/lib/giflib4)
 
-INCLUDE(${QT_USE_FILE})
 ADD_DEFINITIONS(${QT_DEFINITIONS})
 
+FIND_PACKAGE(Qt5Widgets)
+INCLUDE_DIRECTORIES(${Qt5Widgets_INCLUDE_DIRS})
+
 SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -Wall -Wno-reorder -Wno-sign-compare" )
 
 SET(WINDOWS_EXEC )
@@ -143,9 +147,9 @@
 ui/interpolationdialog.ui
 )
 
-QT4_WRAP_CPP(HEADERS_MOC ${QT_HEADERS})
-QT4_WRAP_UI(FORMS_HEADERS ${FORMS})
-QT4_ADD_RESOURCES(RESOURCES_RCC ${RESOURCES})
+qt5_wrap_cpp(HEADERS_MOC ${QT_HEADERS})
+qt5_wrap_ui(FORMS_HEADERS ${FORMS})
+qt5_add_resources(RESOURCES_RCC ${RESOURCES})
 
 IF(WIN32)
 	SET( OPENCV_LIBS "-lopencv_core244 -lopencv_highgui244 -lopencv_imgproc244" )
@@ -154,6 +158,7 @@
 ENDIF(WIN32)
 
 SET( GIF_LIBS "-lgif" )	
+#SET( GIF_LIBS /usr/lib/giflib4/libgif.so "-lgif" )	
 
 set(RES_FILES "")
 if(MINGW)
@@ -165,7 +170,8 @@
 endif(MINGW)
 
 ADD_EXECUTABLE(${TARGET_NAME} ${WINDOWS_EXEC} ${SOURCES} ${HEADERS_MOC} ${FORMS_HEADERS} ${RESOURCES_RCC} ${RES_FILES})
-TARGET_LINK_LIBRARIES(${TARGET_NAME} ${QT_LIBRARIES} ${OPENCV_LIBS} ${GIF_LIBS})
+TARGET_LINK_LIBRARIES(${TARGET_NAME} ${OPENCV_LIBS} ${GIF_LIBS})
+TARGET_LINK_LIBRARIES(${TARGET_NAME} Qt5::Widgets)
 
 IF(UNIX)
 	INSTALL(TARGETS ${TARGET_NAME} DESTINATION ${BIN_INSTALL_DIR})