diff --git a/bin/tex2svg b/bin/tex2svg
index 0e62a34..7830551 100755
--- a/bin/tex2svg
+++ b/bin/tex2svg
@@ -8,6 +8,7 @@ cat >"$WORKDIR/math.tex" <<EOF
 \usepackage{amsmath}
 \usepackage{amssymb}
 \usepackage{amsfonts}
+\usepackage{cancel}
 \newcommand{\ols}[1]{\mskip.5\thinmuskip\overline{\mskip-.5\thinmuskip {#1}}}
 \newcommand{\trans}[0]{^\mathrm{T}}
 \begin{document}