diff --git a/src/breaking-changes/slots-unification.md b/src/breaking-changes/slots-unification.md
index bf814a7..3dc0071 100644
--- a/src/breaking-changes/slots-unification.md
+++ b/src/breaking-changes/slots-unification.md
@@ -64,4 +64,8 @@ A majority of the change has already been shipped in 2.6. As a result, the migra
 1. Replace all `this.$scopedSlots` occurrences with `this.$slots` in 3.x.
 2. Replace all occurrences of `this.$slots.mySlot` with `this.$slots.mySlot()`
 
+If you are upgrading to Vue 3 from Vue <2.6.0, you can look at the
+[documentation of slots in Vue 2 docs][https://v2.vuejs.org/v2/guide/components-slots]
+to gain more information on how the slots are changed.
+
 [Migration build flag: `INSTANCE_SCOPED_SLOTS`](../migration-build.html#compat-configuration)