Fix #2187
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index 996398c..9ae2bd3 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -15,6 +15,7 @@
  (requested by Édouard M)
 #2126: `DeserializationContext.instantiationException()` throws `InvalidDefinitionException`
 #2153: Add `JsonMapper` to replace generic `ObjectMapper` usage
+#2187: Make `JsonNode.toString()` use shared `ObjectMapper` to produce valid json
 
 2.9.8 (not yet released)