diff --git a/app.js b/app.js
index d146375..466f7e5 100644
--- a/app.js
+++ b/app.js
@@ -139,6 +139,7 @@ function getLatexTemplate(equation) {
     \\usepackage{amsmath}
     \\usepackage{amssymb}
     \\usepackage{amsfonts}
+    \\usepackage{xcolor}
     \\usepackage[utf8]{inputenc}
     \\thispagestyle{empty}
     \\begin{document}