diff --git a/README.md b/README.md
index 8594549..4e09cfc 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,12 @@
 
 A tool for converting graphie JS code to a png image, available at http://graphie-to-png.khanacademy.org/.
 
+## Warning to Devs
+
+Khan Exercises is very out of date. This is because graphie-to-png will not work after some changes made in January, 2015. See [this support ticket](https://app.asana.com/0/27216215224639/36842953088193) for more information.
+
+Upgrading Khan Exercises would be a fairly large task, so you may want to consider other alternatives instead (like cherry picking into the `graphie-to-png` branch of Khan Exercises).
+
 ## Local server
 
 To run this locally, fill in `secrets.py` using the template at `secrets.py.example` then run `python app.py`.
diff --git a/khan-exercises b/khan-exercises
index cc0d1f1..d4cb64f 160000
--- a/khan-exercises
+++ b/khan-exercises
@@ -1 +1 @@
-Subproject commit cc0d1f177d332da17b118a1d9fcc3f916424908d
+Subproject commit d4cb64f29ea8f3404a19b336596d9d558ef13cc9