diff --git a/endpoints/common.py b/endpoints/common.py
index e25d7c797..749cf3ba0 100644
--- a/endpoints/common.py
+++ b/endpoints/common.py
@@ -91,7 +91,7 @@ def random_string():
 
 def render_page_template(name, **kwargs):
   resp = make_response(render_template(name, route_data=json.dumps(get_route_data()),
-                       cache_buster='foobarbaz', **kwargs))
+                       cache_buster=random_string(), **kwargs))
   resp.headers['X-FRAME-OPTIONS'] = 'DENY'
   return resp