diff --git a/.github/workflows/R-CMD-check-as-cran.yaml b/.github/workflows/R-CMD-check-as-cran.yaml
index f1580a4..3fbf52a 100644
--- a/.github/workflows/R-CMD-check-as-cran.yaml
+++ b/.github/workflows/R-CMD-check-as-cran.yaml
@@ -36,6 +36,8 @@ jobs:
 
       - uses: r-lib/actions/setup-pandoc@v2
 
+      - uses: r-lib/actions/setup-tinytex@v2
+
       - uses: r-lib/actions/setup-r@v2
         with:
           r-version: ${{ matrix.config.r }}