diff --git a/.github/workflows/pkgdown.yaml b/.github/workflows/pkgdown.yaml
index 2e50df8..b7a7546 100644
--- a/.github/workflows/pkgdown.yaml
+++ b/.github/workflows/pkgdown.yaml
@@ -24,27 +24,10 @@ jobs:
       - uses: actions/checkout@v2
 
       - name: Install required pkgs for linux
-        if: runner.os == 'Linux'
         run: |
           sudo apt-get update
           sudo apt-get install gdal-bin libgdal-dev mpich
-
-      - name: Install required pkgs for mac
-        if: runner.os == 'macOS'
-        run: |
-          brew install gdal mpich
-
-      - name: Install TauDEM on linux and mac
-        if: runner.os != 'Windows'
-        run: sh ./TauDEM.sh
-
-      - name: Install TauDEM on Windows
-        if: runner.os == 'Windows'
-        run: |
-          cd $HOME
-          curl -sLO https://github.com/dtarb/TauDEM/releases/download/v5.3.7/TauDEM537_setup.exe
-          .\TauDEM537_setup.exe /SILENT
-
+          sh ./TauDEM.sh
 
       - uses: r-lib/actions/setup-pandoc@v2