diff --git a/Library/Homebrew/extend/os/mac/diagnostic.rb b/Library/Homebrew/extend/os/mac/diagnostic.rb
index db054ea4c7a1597863c5210fd5419d7e056df144..157e7982bf596e5fd5f72b8bf4fe8a72714fc557 100644
--- a/Library/Homebrew/extend/os/mac/diagnostic.rb
+++ b/Library/Homebrew/extend/os/mac/diagnostic.rb
@@ -69,6 +69,9 @@ module Homebrew
         return unless MacOS::Xcode.installed?
         return unless MacOS::Xcode.outdated?
 
+        # Travis CI images are going to end up outdated so don't complain.
+        return if ENV["TRAVIS"]
+
         message = <<-EOS.undent
           Your Xcode (#{MacOS::Xcode.version}) is outdated.
           Please update to Xcode #{MacOS::Xcode.latest_version} (or delete it).