diff --git a/ReadMe.md b/ReadMe.md
index b9fe0c5..48cb2ea 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -3,6 +3,7 @@
 - [ ] Remove heightmap library
   - [ ] Update ReadMe
   - [ ] ReadMe should also point out where the simplex implementation comes from
+- [ ] Update the `simplex` library to the latest version with FBM
 - [ ] Round the new map generator to a planet shape
 - [ ] Move `tile_size` out of the map generator (this is a render feature, not a map feature)
 - [ ] Turn the new map gen into a wrapper kind of like my heightmap wrapper? (This is sorta already done in a sloppy way.)