diff --git a/ROADMAP.md b/ROADMAP.md
index e020df9ba6..9a8daa3b1f 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -41,6 +41,7 @@
 - [ ] -skip-unused on by default
 - [ ] 64/32 bit int depending on arch (will remove array.len limitation on 64 bit systems)
 - [ ] `copy()` builtin function (e.g. for easier conversion from `[]Foo` to `[4]Foo`)
+- [ ] Lambdas: `a.sort(|a, b| a > b)`
 
 ## [Version 1.0]