diff --git a/TODO b/TODO
index 3647a412d3..80a7f25053 100644
--- a/TODO
+++ b/TODO
@@ -6,3 +6,6 @@
   - tab completion interface
 - SSL should be factored out of net.js into standalone stream object
 - base64 write and toString for buffers
+- node_crypto, support for Buffer in update function of Cipher, Decipher,
+  Hmac, Sign, Verify. See 9a26946aaa99a3f27905d5ba91220784e864e5d0 for an
+  example of how to do it.