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-rw-r--r--lib/prime.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/prime.rb b/lib/prime.rb
index c79b0cfd5f..c64c0c2cf1 100644
--- a/lib/prime.rb
+++ b/lib/prime.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
#
# = prime.rb
#