diff --git a/symmetric_tensor_categories_fiber_v2.txt b/symmetric_tensor_categories_fiber_v2.txt
index b0e8b6f..6968920 100644
--- a/symmetric_tensor_categories_fiber_v2.txt
+++ b/symmetric_tensor_categories_fiber_v2.txt
@@ -15,6 +15,8 @@
 \usepackage{microtype}
 \usepackage{enumitem}
 \usepackage{xcolor}
+\usepackage{tikz}
+\usetikzlibrary{arrows.meta,positioning,calc,fit}
 \usepackage[colorlinks=true,linkcolor=blue!45!black,
             citecolor=green!35!black,urlcolor=blue!55!black]{hyperref}
 \usepackage[nameinlink,noabbrev]{cleveref}