Fixed #2126
diff --git a/release-notes/VERSION-2.x b/release-notes/VERSION-2.x
index 379e094..6e0e42b 100644
--- a/release-notes/VERSION-2.x
+++ b/release-notes/VERSION-2.x
@@ -13,6 +13,7 @@
  (requested by Christopher S)
 #2116: Make NumberSerializers.Base public and its inherited classes not final
  (requested by Édouard M)
+#2126: `DeserializationContext.instantiationException()` throws `InvalidDefinitionException`
 
 2.9.7 (not yet released)