Fixed #1284
diff --git a/release-notes/VERSION b/release-notes/VERSION
index 7651e71..202f01e 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -16,6 +16,7 @@
   using `JsonInclude.Include.CUSTOM`
 #1035: `@JsonAnySetter` assumes key of `String`, does not consider declared type.
  (reported by Michael F)
+#1284: Make `StdKeySerializers` use new `JsonGenerator.writeFieldId()` for `int`/`long` keys
 #1320: Add `ObjectNode.put(String, BigInteger)`
  (proposed by Jan L)
 #1341: `DeserializationFeature.FAIL_ON_MISSING_EXTERNAL_TYPE_ID_PROPERTY`