diff --git a/.github/workflows/delete-pages.yml b/.github/workflows/delete-pages.yml
index 80cffcfa..ff19f1ce 100644
--- a/.github/workflows/delete-pages.yml
+++ b/.github/workflows/delete-pages.yml
@@ -1,3 +1,12 @@
+#
+#                 ⚠️ ⚠️ ⚠️ WARNING ⚠️ ⚠️ ⚠️
+#
+# Updating this file in the main branch will do nothing!
+#
+# It is only run on the gh-pages branch.
+# Any changes _must_ be merged to gh-pages to take effect.
+#
+
 name: Delete old folders from GitHub Pages
 
 on:
diff --git a/removeOldFolders.js b/removeOldFolders.js
index 57eb0329..f15074b1 100644
--- a/removeOldFolders.js
+++ b/removeOldFolders.js
@@ -1,3 +1,13 @@
+/*
+ *                 ⚠️ ⚠️ ⚠️ WARNING ⚠️ ⚠️ ⚠️
+ *
+ * Updating this file in the main branch will do nothing!
+ *
+ * It is only invoked by the delete-pages.yml github action,
+ * which is only run on the gh-pages branch.
+ * Any changes _must_ be merged to gh-pages to take effect.
+ */
+
 /* eslint-disable no-console */
 import { parseArgs } from "node:util";
 import * as fs from "node:fs";