%
\NeedsTeXFormat{LaTeX2e}
-\ProvidesPackage{lltjp-footmisc}[2021-03-25 Patch to footmisc for LuaTeX-ja]
-\RequirePackage{footmisc}
+\ProvidesPackage{lltjp-footmisc}[2022-02-19 Patch to footmisc for LuaTeX-ja]
+\@ifpackagelater{footmisc}{2022-02-10}{%% v6.0a or later
+ \patchcmd{\@makenormalcolbox}{\vskip -\@outputbox@depth\@textbottom}%
+ {\pltx@adjust@wd@outputbox\vskip -\@outputbox@depth\@textbottom}{}{}%
+ \let\ltj@next\endinput
+}{\let\ltj@next\relax}
+\ltj@next
+
+% old (v5.5)
\let \if@tempswa \ifFN@bottom
\ifFN@para \@tempswatrue \fi
\if@tempswa