diff --git a/engine/README.md b/engine/README.md
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--- a/engine/README.md
+++ b/engine/README.md
@@ -1,5 +1,7 @@
 # Flutter Engine
 
+<!-- If you are reading this, we're terribly sorry. This forces a new engine build to fix https://github.com/flutter/flutter/issues/170536 -->
+
 ## Setting up the Engine development environment
 
 See [here](https://github.com/flutter/flutter/blob/master/engine/src/flutter/docs/contributing/Setting-up-the-Engine-development-environment.md#getting-the-source)