diff --git a/.github/workflows/slack-notify-build.yml b/.github/workflows/slack-notify-build.yml
index 54dbdd8..c096d63 100644
--- a/.github/workflows/slack-notify-build.yml
+++ b/.github/workflows/slack-notify-build.yml
@@ -59,11 +59,18 @@ jobs:
       - uses: r-lib/actions/setup-tinytex@v2
       - run: tlmgr --version
 
-      - name: Install Ghostscript
-        run: |
-          if [ "${{ runner.os }}" == 'Linux' ]; then sudo apt-get install -y ghostscript; fi
-          if [ "${{ runner.os }}" == 'macOS' ]; then brew install ghostscript; fi
-          if [ "${{ runner.os }}" == 'Windows' ]; then choco install ghostscript --no-progress; fi
+            - name: Install Ghostscript on Linux
+        if: runner.os == 'Linux'
+        run: sudo apt-get install -y ghostscript
+
+      - name: Install Ghostscript on macOS
+        if: runner.os == 'macOS'
+        run: brew install ghostscript
+
+      - name: Install Ghostscript on Windows
+        if: runner.os == 'Windows'
+        run: choco install ghostscript --no-progress
+
 
       - uses: r-lib/actions/setup-r@v2
         with: