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-rw-r--r--lib/rubygems/psych_additions.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rubygems/psych_additions.rb b/lib/rubygems/psych_additions.rb
index 08fc04c90d..487b269903 100644
--- a/lib/rubygems/psych_additions.rb
+++ b/lib/rubygems/psych_additions.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: false
# This exists just to satisfy bugs in marshal'd gemspecs that
# contain a reference to YAML::PrivateType. We prune these out
# in Specification._load, but if we don't have the constant, Marshal