diff --git a/docs/v2.md b/docs/v2.md
index 6f234e827..a8abd401c 100644
--- a/docs/v2.md
+++ b/docs/v2.md
@@ -67,3 +67,12 @@ to `b(a, c)`, regardless of the types.
 
 - [x] Emits warning when used.
 - [x] Code action to rewrite to desired syntax
+
+## `-0.0` should not be equal to `0.0`
+
+On the Erlang target `0.0 == -0.0` is `False`; that is not the case on the
+JavaScript target where `0.0` is the same as `-0.0`.
+
+In Gleam v2 we want to make sure that `0.0` and `-0.0` are not considered equal
+on any target. This would mean using `Object.is` when checking equality on the
+JavaScript target.