diff --git a/spec/lib/message_bus/backend_spec.rb b/spec/lib/message_bus/backend_spec.rb
index 7edd0275..5fc5aa32 100644
--- a/spec/lib/message_bus/backend_spec.rb
+++ b/spec/lib/message_bus/backend_spec.rb
@@ -303,7 +303,7 @@ def new_test_bus
 
     @bus.publish("/foo", "three")
 
-    wait_for(100) do
+    wait_for(2000) do
       got.length == 2
     end