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-rw-r--r--ext/stringio/stringio.gemspec1
1 files changed, 1 insertions, 0 deletions
diff --git a/ext/stringio/stringio.gemspec b/ext/stringio/stringio.gemspec
index 5bda30e..db5c3e0 100644
--- a/ext/stringio/stringio.gemspec
+++ b/ext/stringio/stringio.gemspec
@@ -1,4 +1,5 @@
# -*- encoding: utf-8 -*-
+# frozen_string_literal: true
# stub: stringio 0.0.0 ruby lib
# stub: extconf.rb