diff --git a/readme.md b/readme.md
index 6ee5bea..b64cce6 100644
--- a/readme.md
+++ b/readme.md
@@ -354,6 +354,7 @@ roughly as though it had a constant well population equal to the plate's average
 * ~~Implement custom Vertex class to simplify code and make it easier to implement different MWM algorithms~~ DONE
   * This also seems to be faster when using the same algorithm than the version with lots of maps, which is a nice bonus!
 * Re-implement CDR1 matching method
+* Implement simulation of read depth, and of read errors. Pre-filter graph for difference in read count to eliminate spurious sequences.
 * Implement Duan and Su's maximum weight matching algorithm
     * Add controllable algorithm-type parameter?
     * This would be fun and valuable, but probably take more time than I have for a hobby project.