diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 570f4cd12..20e5de466 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -57,6 +57,8 @@ def self.run_all(reporter = nil)
     mocks.verify_doubled_constant_names = true
   end
 
+  Warning[:deprecated] = true
+
   config.filter_run_when_matching :focus
 
   config.order = :random