diff --git a/CMakeLists.txt b/CMakeLists.txt
index 377b080..75b80b3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1280,7 +1280,7 @@ endif ()
 
 set (CPACK_DEBIAN_PACKAGE_DESCRIPTION "${PROJECT_DESCRIPTION}")
 set (CPACK_DEBIAN_PACKAGE_HOMEPAGE "${PROJECT_HOMEPAGE}")
-set (CPACK_DEBIAN_PACKAGE_DEPENDS "libgfortran5 (>=8.4.0), libqt5serialport5 (>=5.2), libqt5multimedia5-plugins (>=5.2), libqt5widgets5 (>=5.2), libusb-1.0-0, libudev1, libc6 (>=2.19)")
+set (CPACK_DEBIAN_PACKAGE_DEPENDS "libgfortran3 (>= 6.3.0) | libgfortran5 (>=8.4.0), libqt5serialport5 (>=5.2), libqt5multimedia5-plugins (>=5.2), libqt5widgets5 (>=5.2), libusb-1.0-0, libudev1, libc6 (>=2.19)")
 set (CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
 
 set (CPACK_RPM_PACKAGE_ARCHITECTURE ${CMAKE_SYSTEM_PROCESSOR})