diff --git a/book/figures/flowcharts_tikz.tex b/book/figures/flowcharts_tikz.tex
index b452217..54540ea 100644
--- a/book/figures/flowcharts_tikz.tex
+++ b/book/figures/flowcharts_tikz.tex
@@ -1,5 +1,5 @@
 \tikzstyle{every picture}+=[font=\footnotesize\sffamily]
-\usetikzlibrary{calc, shapes, arrows, decorations.pathreplacing, calligraphy,
+\usetikzlibrary{calc, shapes, arrows.meta, decorations.pathreplacing, calligraphy,
                 positioning}
 \tikzstyle{decision} = [diamond, draw=codeblack, fill=codeblack, text=white,
     text width=4.5em, text badly centered, node distance=3cm, inner sep=0pt,