diff --git a/doc/_static/latex/preamble.tex b/doc/_static/latex/preamble.tex
index 3213c955bdb..50ef29d4d2b 100644
--- a/doc/_static/latex/preamble.tex
+++ b/doc/_static/latex/preamble.tex
@@ -5,6 +5,7 @@
 
 \usepackage[some]{background}
 \usepackage{sectsty}
+\usepackage{pdflscape}
 
 \definecolor{bg-color}{HTML}{333f67}