diff --git a/.github/workflows/install_by_pak.yaml b/.github/workflows/install_by_pak.yaml
index 394d4e82..7551235b 100644
--- a/.github/workflows/install_by_pak.yaml
+++ b/.github/workflows/install_by_pak.yaml
@@ -31,7 +31,8 @@ jobs:
       - uses: r-lib/actions/setup-pandoc@v2
 
       - name: Install libglpk40
-        run: apt-get install -y libglpk40
+        if: ${{ matrix.config.os == 'ubuntu-latest' }}
+        run: sudo apt-get install -y libglpk40
 
       - uses: r-lib/actions/setup-r@v2
         with: