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-rw-r--r--activesupport/lib/active_support/json/encoding.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/json/encoding.rb b/activesupport/lib/active_support/json/encoding.rb
index 91e4f07c6c..bd2f909ca9 100644
--- a/activesupport/lib/active_support/json/encoding.rb
+++ b/activesupport/lib/active_support/json/encoding.rb
@@ -61,7 +61,7 @@ module ActiveSupport
# hashes and arrays need to get encoder in the options, so that they can detect circular references
options.merge(:encoder => self)
else
- options
+ options.dup
end
end