diff --git a/index.php b/index.php
index 220fe27c1..66314ad17 100644
--- a/index.php
+++ b/index.php
@@ -91,6 +91,7 @@
 	<script>
 		dojoConfig = {
 			async: true,
+			cacheBust: new Date(),
 			packages: [
 				{ name: "fox", location: "../../js" },
 			]
diff --git a/prefs.php b/prefs.php
index 931373bad..4298c38a2 100644
--- a/prefs.php
+++ b/prefs.php
@@ -57,6 +57,7 @@
 	<script>
 		dojoConfig = {
 			async: true,
+			cacheBust: new Date(),
 			packages: [
 				{ name: "lib", location: "../" },
 				{ name: "fox", location: "../../js" },