diff --git a/MIGRATING_FROM_BATIK.md b/MIGRATING_FROM_BATIK.md
index 557a493fb..859620b07 100644
--- a/MIGRATING_FROM_BATIK.md
+++ b/MIGRATING_FROM_BATIK.md
@@ -67,4 +67,7 @@ Batik:
    argument and now returns a `boolean`.
 
 11) The old and deprecated `CSSValue` API was replaced by an API close to W3C's
-   Typed OM.
+   Typed OM. One of the consequences is that if your scripts call `getPresentationAttribute`
+   on `SVGStylable` objects, `getPresentationAttributeValue` should be called
+   instead, obtaining a `CSSStyleValue`. Note that modern SVGOM has neither of
+   those methods.
diff --git a/README.md b/README.md
index 1bc29b1cd..dd476f079 100644
--- a/README.md
+++ b/README.md
@@ -238,6 +238,7 @@ repositories {
             includeGroup 'io.sf.carte'
             includeGroup 'io.sf.jclf'
             includeGroup 'io.sf.graphics'
+            includeGroup 'io.sf.w3'
         }
     }
 }