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-rw-r--r--lib/rubygems/package/digest_io.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rubygems/package/digest_io.rb b/lib/rubygems/package/digest_io.rb
index f8bde0f557..47f76ec10d 100644
--- a/lib/rubygems/package/digest_io.rb
+++ b/lib/rubygems/package/digest_io.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
##
# IO wrapper that creates digests of contents written to the IO it wraps.