diff --git a/aws-modules/aws-miscellaneous/README.md b/aws-modules/aws-miscellaneous/README.md
index 5be8e6a3f2..104c8719df 100644
--- a/aws-modules/aws-miscellaneous/README.md
+++ b/aws-modules/aws-miscellaneous/README.md
@@ -5,6 +5,5 @@ This module contains articles about various Amazon Web Services (AWS) such as EC
 ### Relevant articles
 
 - [Managing EC2 Instances in Java](https://www.baeldung.com/ec2-java)
-- [Integration Testing with a Local DynamoDB Instance](https://www.baeldung.com/dynamodb-local-integration-tests)
 - [Managing Amazon SQS Queues in Java](https://www.baeldung.com/aws-queues-java)
 - [Guide to AWS Aurora RDS with Java](https://www.baeldung.com/aws-aurora-rds-java)
diff --git a/core-java-modules/core-java-8/README.md b/core-java-modules/core-java-8/README.md
index 6061f3318d..0921c1538a 100644
--- a/core-java-modules/core-java-8/README.md
+++ b/core-java-modules/core-java-8/README.md
@@ -11,5 +11,5 @@ This module contains articles about Java 8 core features
 - [Finding Min/Max in an Array with Java](https://www.baeldung.com/java-array-min-max)
 - [Internationalization and Localization in Java 8](https://www.baeldung.com/java-8-localization)
 - [Generalized Target-Type Inference in Java](https://www.baeldung.com/java-generalized-target-type-inference)
-- [Monads in Java](https://www.baeldung.com/java-monads)
+- [Monads in Java – Optional](https://www.baeldung.com/java-monads)
 - [[More -->]](/core-java-modules/core-java-8-2)
diff --git a/core-java-modules/core-java-concurrency-advanced-5/README.md b/core-java-modules/core-java-concurrency-advanced-5/README.md
new file mode 100644
index 0000000000..ba845a7c4b
--- /dev/null
+++ b/core-java-modules/core-java-concurrency-advanced-5/README.md
@@ -0,0 +1,3 @@
+
+### Relevant Articles:
+- [Why wait() Requires Synchronization?](https://www.baeldung.com/java-wait-necessary-synchronization)
diff --git a/core-java-modules/core-java-string-operations-7/README.md b/core-java-modules/core-java-string-operations-7/README.md
index 2dce44d217..7020369f02 100644
--- a/core-java-modules/core-java-string-operations-7/README.md
+++ b/core-java-modules/core-java-string-operations-7/README.md
@@ -1,2 +1,3 @@
 
 ### Relevant Articles:
+[How to Center Text Output in Java](https://www.baeldung.com/java-center-text-output)