diff --git a/docs/topics/3.1-announcement.md b/docs/topics/3.1-announcement.md
index 89e99f82a..d0975f5b8 100644
--- a/docs/topics/3.1-announcement.md
+++ b/docs/topics/3.1-announcement.md
@@ -54,7 +54,7 @@ This work also means that we now have both `serializers.DictField()`, and `seria
 
 The serializer redesign in 3.0 did not include any public API for modifying how ModelSerializer classes automatically generate a set of fields from a given mode class. We've now re-introduced an API for this, allowing you to create new ModelSerializer base classes that behave differently, such as using a different default style for relationships.
 
-**TODO**: Link to docs.
+For more information, see the documentation on [customizing field mappings](../api-guide/serializers/#customizing-field-mappings) for ModelSerializer classes.
 
 ## Moving packages out of core