diff --git a/.github/workflows/R-CMD-check.yaml b/.github/workflows/R-CMD-check.yaml
index ee65ccb..73b5e91 100644
--- a/.github/workflows/R-CMD-check.yaml
+++ b/.github/workflows/R-CMD-check.yaml
@@ -34,8 +34,8 @@ jobs:
           - {os: ubuntu-latest,   r: 'release'}
           - {os: ubuntu-latest,   r: 'oldrel-1'}
           - {os: ubuntu-latest,   r: 'oldrel-2'}
-          - {os: ubuntu-latest,   r: 'oldrel-3'}
-          - {os: ubuntu-latest,   r: 'oldrel-4'}
+          # - {os: ubuntu-latest,   r: 'oldrel-3'}
+          # - {os: ubuntu-latest,   r: 'oldrel-4'}
 
     env:
       GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index c2edfab..c4cbdcb 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -40,6 +40,7 @@ jobs:
           install.packages("remotes")
           remotes::install_github("ModelOriented/DrWhyTemplate")
           install.packages("textshaping")
+        shell: Rscript {0}
           
       - name: Build site
         run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)