diff --git a/config/environments/development.rb b/config/environments/development.rb
index 6f018e1c5..501ea94e4 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -35,6 +35,7 @@ Rails.application.configure do
   config.middleware.insert_after(
     ActionDispatch::Static,
     Rack::LiveReload,
+    no_swf: true,
     min_delay: 500,    # default 1000
     max_delay: 10_000, # default 60_000
     live_reload_port: 35_738