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-rw-r--r--lib/rack/auth/digest/nonce.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/rack/auth/digest/nonce.rb b/lib/rack/auth/digest/nonce.rb
index 57089cb3..6c1f28a3 100644
--- a/lib/rack/auth/digest/nonce.rb
+++ b/lib/rack/auth/digest/nonce.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require 'digest/md5'
 
 module Rack