diff --git a/pkg/dds/lib/devtools_server.dart b/pkg/dds/lib/devtools_server.dart
index 299044cf775..58416065a0d 100644
--- a/pkg/dds/lib/devtools_server.dart
+++ b/pkg/dds/lib/devtools_server.dart
@@ -276,7 +276,7 @@ class DevToolsServer {
     // Ensure browsers don't cache older versions of the app.
     _server.defaultResponseHeaders.add(
       HttpHeaders.cacheControlHeader,
-      'max-age=900',
+      'max-age=0',
     );
 
     // Serve requests in an error zone to prevent failures