diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -1,3 +1 @@
-# hotshot-builder-core
-
-Builder support library for hotshot
+# DEPRECATED: all builder code can now be found at [marketplace-builder-core](https://github.com/EspressoSystems/marketplace-builder-core)