diff --git a/CONTRIBUTORS.md b/CONTRIBUTORS.md
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+# People who have contributed content to this repository
+# Names should be added to this file as:
+#     Name <email address>
+Brian Ferris <bdferris@google.com>
+Aaron Antrim <aaron@trilliumtransit.com>
+Sean Barbeau <sjbarbeau@gmail.com>
+Ross Peterson <ross@gridworks.us>
+Nome Dickerson <nome@trilliumtransit.com>
\ No newline at end of file
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diff --git a/gtfs-flex/spec-reference.md b/spec/reference.md
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