diff --git a/.github/tl_packages b/.github/tl_packages
index 2c356f6..8b2ce49 100644
--- a/.github/tl_packages
+++ b/.github/tl_packages
@@ -28,6 +28,7 @@ hyph-utf8
 epstopdf-pkg
 lualatex-math
 mathspec
+makeindex
 
 # Fonts
 sourcecodepro