diff --git a/jackson/README.md b/jackson/README.md
index c17d89912f..cd08926386 100644
--- a/jackson/README.md
+++ b/jackson/README.md
@@ -12,3 +12,4 @@
 - [Jackson Date](http://www.baeldung.com/jackson-serialize-dates)
 - [Jackson – Bidirectional Relationships](http://www.baeldung.com/jackson-bidirectional-relationships-and-infinite-recursion)
 - [Jackson JSON Tutorial](http://www.baeldung.com/jackson)
+- [Jackson – Working with Maps and nulls](http://www.baeldung.com/jackson-map-null-values-or-null-key)