diff --git a/services/clsi/test/acceptance/fixtures/examples/tikz_feynman/main.tex b/services/clsi/test/acceptance/fixtures/examples/tikz_feynman/main.tex
index c752068542..8e8860cd98 100644
--- a/services/clsi/test/acceptance/fixtures/examples/tikz_feynman/main.tex
+++ b/services/clsi/test/acceptance/fixtures/examples/tikz_feynman/main.tex
@@ -1,3 +1,4 @@
+\usepackage{luatex85}
 \documentclass[tikz]{standalone}
 
 \usepackage[compat=1.1.0]{tikz-feynman}