1 files changed, 5 insertions, 1 deletions
diff --git a/activesupport/lib/active_support/json/encoders/date.rb b/activesupport/lib/active_support/json/encoders/date.rb
index d55f17962b..cb9419d29d 100644
--- a/activesupport/lib/active_support/json/encoders/date.rb
+++ b/activesupport/lib/active_support/json/encoders/date.rb
@@ -5,6 +5,10 @@ class Date
   #   Date.new(2005,2,1).to_json
   #   # => "2005/02/01"
   def to_json(options = nil)
-    %("#{strftime("%Y/%m/%d")}")
+    if ActiveSupport.use_standard_json_time_format
+      %("#{strftime("%Y-%m-%d")}")
+    else
+      %("#{strftime("%Y/%m/%d")}")
+    end
   end
 end