diff --git a/priv/static/js/service-worker-init.js b/priv/static/js/service-worker-init.js
index fb73632..74e4f2c 100644
--- a/priv/static/js/service-worker-init.js
+++ b/priv/static/js/service-worker-init.js
@@ -1,5 +1,19 @@
 const registerServiceWorker = async () => {
   if ("serviceWorker" in navigator) {
+    if (navigator.storage && navigator.storage.persist) {
+      navigator.storage.persist().then((persistent) => {
+        if (persistent) {
+          console.log(
+            "Storage will not be cleared except by explicit user action",
+          );
+        } else {
+          console.log(
+            "Storage may be cleared by the UA under storage pressure.",
+          );
+        }
+      });
+    }
+
     try {
       const registration = await navigator.serviceWorker.register(
         "/js/service-worker.js",