diff --git a/README.md b/README.md
index beb1992..b7b3bd1 100644
--- a/README.md
+++ b/README.md
@@ -100,7 +100,7 @@ jobs:
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
-        if: github.ref == 'refs/heads/main'
+        if: ${{ github.ref == 'refs/heads/main' }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./public
@@ -278,7 +278,7 @@ jobs:
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
-        if: github.ref == 'refs/heads/main'
+        if: ${{ github.ref == 'refs/heads/main' }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
 ```
@@ -331,7 +331,7 @@ jobs:
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3
-        if: github.ref == 'refs/heads/main'
+        if: ${{ github.ref == 'refs/heads/main' }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
 ```