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-rw-r--r--ext/bigdecimal/sample/pi.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/bigdecimal/sample/pi.rb b/ext/bigdecimal/sample/pi.rb
index 2f7dd27d60..ea9663896c 100644
--- a/ext/bigdecimal/sample/pi.rb
+++ b/ext/bigdecimal/sample/pi.rb
@@ -1,4 +1,5 @@
#!/usr/local/bin/ruby
+# frozen_string_literal: false
#
# pi.rb