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-rw-r--r--test/rubygems/test_gem_source.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/rubygems/test_gem_source.rb b/test/rubygems/test_gem_source.rb
index 7d23eeea5e..d4a8a0142d 100644
--- a/test/rubygems/test_gem_source.rb
+++ b/test/rubygems/test_gem_source.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
require 'rubygems/test_case'
require 'rubygems/source'
require 'rubygems/indexer'