diff --git a/.vscode/extensions.json b/.vscode/extensions.json
index 96ef052..f56e31d 100644
--- a/.vscode/extensions.json
+++ b/.vscode/extensions.json
@@ -12,6 +12,7 @@
     "esbenp.prettier-vscode",
     "github.vscode-github-actions",
     "redhat.vscode-yaml",
+    "ruby-syntax-tree.vscode-syntax-tree",
     "shopify.ruby-lsp",
     "sianglim.slim"
   ]