LuaJIT officially supports up to Lua 5.1.x, mainly due to Mike Pall not liking all changes to the language that followed https://www.freelists.org/post/luajit/

LuaJIT officially supports up to Lua 5.1.x, mainly due to Mike Pall not liking all changes to the language that followed https://www.freelists.org/post/luajit/Port-bitop-to-53,1 https://www.freelists.org/post/luajit/Port-bitop-to-53,1