diff --git a/.github/workflows/sandpaper-main.yaml b/.github/workflows/sandpaper-main.yaml
index 31c59794f..573073275 100755
--- a/.github/workflows/sandpaper-main.yaml
+++ b/.github/workflows/sandpaper-main.yaml
@@ -69,7 +69,7 @@ jobs:
 
       - name: "Modify index.html"
         run: |
-            echo "<script src="files/additional.js" type="text/javascript"></script>" >> index.html
+            find . -name "*.html" -exec sh -c 'echo "<script src="files/additional.js" type="text/javascript"></script>" >> "$1"' _ {} \;
 
       - name: "Commit and Push Changes"
         run: |