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-rw-r--r--lib/plum/rack/cli.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/plum/rack/cli.rb b/lib/plum/rack/cli.rb
index bc5a767..18fe90f 100644
--- a/lib/plum/rack/cli.rb
+++ b/lib/plum/rack/cli.rb
@@ -1,3 +1,4 @@
+# -*- frozen-string-literal: true -*-
require "optparse"
require "rack/builder"