diff --git a/.github/workflows/check-bioc.yml b/.github/workflows/check-bioc.yml
index 8940c1c..9f934c6 100644
--- a/.github/workflows/check-bioc.yml
+++ b/.github/workflows/check-bioc.yml
@@ -144,6 +144,7 @@ jobs:
 
           ## Required for tcltk
           brew install xquartz --cask
+          brew install Caskroom/cask/mactex
 
       - name: Install Windows system dependencies
         if: runner.os == 'Windows'