-For full LyX usability we suggest to use Qt 4.x and at least Qt 4.8 which
-has been widely tested. For compilation you need to compile against at
-least Qt 4.5.0 and at Windows we advise at highest Qt 4.8.4. The only
-special point to make is that you must ensure that both LyX and the
-Qt libraries are compiled with the same C++ compiler.
+For full LyX usability we suggest to use Qt 5.6 and higher, or at the
+very least Qt 5.4. For compilation you need to compile against at least
+Qt 4.8 which has been widely tested, and for Windows we advise at least
+Qt 4.8.4. The only special point to make is that you must ensure that
+both LyX and the Qt libraries are compiled with the same C++ compiler.