diff --git a/config/initializers/04-message_bus.rb b/config/initializers/04-message_bus.rb
index 308985a6de8..b8d67a09649 100644
--- a/config/initializers/04-message_bus.rb
+++ b/config/initializers/04-message_bus.rb
@@ -45,3 +45,8 @@ end
 
 MessageBus.cache_assets = !Rails.env.development?
 MessageBus.enable_diagnostics
+
+if Rails.env == "test"
+  # disable keepalive in testing
+  MessageBus.keepalive_interval = -1
+end