diff --git a/README.md b/README.md
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--- a/README.md
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@@ -1,3 +1,5 @@
+MobilityData's internal fork of the Official GTFS Specification repository. This fork is used to draft pull requests before sharing them on the official repo. [Go to the official repo to ask questions and open issues](https://github.com/google/transit). 
+
 The repository contains specification to manipulate General Transit
 Feed Specification (GTFS) and GTFS Realtime:
 * [GTFS](/gtfs/README.md)