diff --git a/Library/Homebrew/test/cask/artifact/shared_examples/uninstall_zap.rb b/Library/Homebrew/test/cask/artifact/shared_examples/uninstall_zap.rb
index 046bc2f052..6a6a54a9eb 100644
--- a/Library/Homebrew/test/cask/artifact/shared_examples/uninstall_zap.rb
+++ b/Library/Homebrew/test/cask/artifact/shared_examples/uninstall_zap.rb
@@ -149,7 +149,7 @@ shared_examples "#uninstall_phase or #zap_phase" do
         }.to output(/Application 'my.fancy.package.app' did not quit\./).to_stderr
       end
 
-      expect(time.real).to be_within(0.5).of(10)
+      expect(time.real).to be_within(3).of(10)
     end
   end