diff --git a/core-java-modules/core-java-streams-4/README.md b/core-java-modules/core-java-streams-4/README.md
index 86b293566a..80e4534b0f 100644
--- a/core-java-modules/core-java-streams-4/README.md
+++ b/core-java-modules/core-java-streams-4/README.md
@@ -2,3 +2,4 @@
 
 - [Count Occurrences Using Java groupingBy Collector](https://www.baeldung.com/java-groupingby-count)
 - [How to Split a Stream into Multiple Streams](https://www.baeldung.com/java-split-stream)
+- [Filter Java Stream to 1 and Only 1 Element](https://www.baeldung.com/java-filter-stream-unique-element)