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-rw-r--r--lib/unicorn/oob_gc.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/unicorn/oob_gc.rb b/lib/unicorn/oob_gc.rb
index db9f2cb..efd9177 100644
--- a/lib/unicorn/oob_gc.rb
+++ b/lib/unicorn/oob_gc.rb
@@ -1,4 +1,5 @@
 # -*- encoding: binary -*-
+# frozen_string_literal: false
 
 # Strongly consider https://github.com/tmm1/gctools if using Ruby 2.1+
 # It is built on new APIs in Ruby 2.1, so it is more intelligent than