diff --git a/docs/guide/migrations/0-6.md b/docs/guide/migrations/0-6.md
index 0acf7619..2b8cec1e 100644
--- a/docs/guide/migrations/0-6.md
+++ b/docs/guide/migrations/0-6.md
@@ -126,6 +126,10 @@ Modifiers now display negative effects in red. The current implementation assume
 
 Modifiers have renamed their `revert` property to `invert` to match the terms used by formulas. Update any custom modifiers you've created accordingly.
 
+### Custom Features
+
+Lazy proxies now call the options function with the base object as the `this` argument and the first parameter. Features with `options` functions are expected to pass the base object as the `this` argument and first parameter as well. The `OptionsFunc` type has already been updated for this, so TS will complain if you skip this migration step.
+
 ## Fixing visibility changes
 
 Visibility properties now work with booleans, which has several implications.