diff --git a/core-java-modules/core-java-concurrency-basic/README.md b/core-java-modules/core-java-concurrency-basic/README.md
index e5c061710c..a133beb1fe 100644
--- a/core-java-modules/core-java-concurrency-basic/README.md
+++ b/core-java-modules/core-java-concurrency-basic/README.md
@@ -11,4 +11,5 @@ This module contains articles about basic Java concurrency
 - [Runnable vs. Callable in Java](https://www.baeldung.com/java-runnable-callable)
 - [What Is Thread-Safety and How to Achieve It?](https://www.baeldung.com/java-thread-safety)
 - [How to Get Notified When a Task Completes in Java Executors](https://www.baeldung.com/java-executors-task-completed-notification)
+- [Difference Between Future, CompletableFuture, and Rxjava’s Observable](https://www.baeldung.com/java-future-completablefuture-rxjavas-observable)
 - [[Next -->]](/core-java-modules/core-java-concurrency-basic-2)
diff --git a/javaxval/README.md b/javaxval/README.md
index 7420580f8e..be8c3b51b7 100644
--- a/javaxval/README.md
+++ b/javaxval/README.md
@@ -3,7 +3,7 @@
 This module contains articles about Bean Validation.
 
 ### Relevant Articles: 
-- [Java Bean Validation Basics](https://www.baeldung.com/javax-validation)
+- [Java Bean Validation Basics](https://www.baeldung.com/java-validation)
 - [Validating Container Elements with Jakarta Bean Validation 3.0](https://www.baeldung.com/bean-validation-container-elements)
 - [Validations for Enum Types](https://www.baeldung.com/javax-validations-enums)
 - [Javax BigDecimal Validation](https://www.baeldung.com/javax-bigdecimal-validation)