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-rwxr-xr-xci/travis.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/ci/travis.rb b/ci/travis.rb
index 2313bece60..b124358789 100755
--- a/ci/travis.rb
+++ b/ci/travis.rb
@@ -1,4 +1,6 @@
#!/usr/bin/env ruby
+# frozen_string_literal: true
+
require "fileutils"
include FileUtils