diff --git a/core-java-modules/core-java-9/README.md b/core-java-modules/core-java-9/README.md
index ecad86ace2..5715520bae 100644
--- a/core-java-modules/core-java-9/README.md
+++ b/core-java-modules/core-java-9/README.md
@@ -20,7 +20,6 @@
 - [Multi-Release Jar Files](https://www.baeldung.com/java-multi-release-jar)
 - [Ahead of Time Compilation (AoT)](https://www.baeldung.com/ahead-of-time-compilation)
 - [Java 9 Process API Improvements](https://www.baeldung.com/java-9-process-api)
-- [Guide to java.lang.Process API](https://www.baeldung.com/java-process-api)
 - [Java 9 java.util.Objects Additions](https://www.baeldung.com/java-9-objects-new)
 - [Java 9 Reactive Streams](https://www.baeldung.com/java-9-reactive-streams)
 - [Java 9 Optional API Additions](https://www.baeldung.com/java-9-optional)
@@ -31,4 +30,4 @@
 - [A Guide to Java 9 Modularity](https://www.baeldung.com/java-9-modularity)
 - [Java 9 Platform Module API](https://www.baeldung.com/java-9-module-api)
 - [Java 9 Platform Logging API](https://www.baeldung.com/java-9-logging-api)
-
+- [Filtering a Stream of Optionals in Java](https://www.baeldung.com/java-filter-stream-of-optional)