diff --git a/core-java-modules/core-java-collections-list-3/README.md b/core-java-modules/core-java-collections-list-3/README.md
index 967e148a99..bcc8b3f3ed 100644
--- a/core-java-modules/core-java-collections-list-3/README.md
+++ b/core-java-modules/core-java-collections-list-3/README.md
@@ -11,4 +11,5 @@ This module contains articles about the Java List collection
 - [Filtering a Java Collection by a List](https://www.baeldung.com/java-filter-collection-by-list)
 - [How to Count Duplicate Elements in Arraylist](https://www.baeldung.com/java-count-duplicate-elements-arraylist)
 - [Finding the Differences Between Two Lists in Java](https://www.baeldung.com/java-lists-difference)
+- [List vs. ArrayList in Java](https://www.baeldung.com/java-list-vs-arraylist)
 - [[<-- Prev]](/core-java-modules/core-java-collections-list-2)
diff --git a/core-java-modules/core-java-lang-4/README.md b/core-java-modules/core-java-lang-4/README.md
index a145633d2b..befef0b6eb 100644
--- a/core-java-modules/core-java-lang-4/README.md
+++ b/core-java-modules/core-java-lang-4/README.md
@@ -11,3 +11,4 @@ This module contains articles about core features in the Java language
 - [Fixing the “Declared package does not match the expected package” Error](https://www.baeldung.com/java-declared-expected-package-error)
 - [Chaining Constructors in Java](https://www.baeldung.com/java-chain-constructors)
 - [Difference Between POJO, JavaBeans, DTO and VO](https://www.baeldung.com/java-pojo-javabeans-dto-vo)
+- [Implements vs. Extends in Java](https://www.baeldung.com/java-implements-vs-extends)
diff --git a/jackson-modules/jackson-annotations/README.md b/jackson-modules/jackson-annotations/README.md
index 783a06605b..3b6cd6f20b 100644
--- a/jackson-modules/jackson-annotations/README.md
+++ b/jackson-modules/jackson-annotations/README.md
@@ -7,3 +7,4 @@ This module contains articles about Jackson annotations.
 - [More Jackson Annotations](https://www.baeldung.com/jackson-advanced-annotations)
 - [Jackson – Bidirectional Relationships](https://www.baeldung.com/jackson-bidirectional-relationships-and-infinite-recursion)
 - [Jackson JSON Views](https://www.baeldung.com/jackson-json-view-annotation)
+- [Deduction-Based Polymorphism in Jackson 2.12](https://www.baeldung.com/jackson-deduction-based-polymorphism)
diff --git a/java-numbers-4/README.md b/java-numbers-4/README.md
index 95d46203ab..267639a829 100644
--- a/java-numbers-4/README.md
+++ b/java-numbers-4/README.md
@@ -6,3 +6,4 @@
 - [Guide to Java BigInteger](https://www.baeldung.com/java-biginteger)
 - [Automorphic Numbers in Java](https://www.baeldung.com/java-automorphic-numbers)
 - [Convert Byte Size Into a Human-Readable Format in Java](https://www.baeldung.com/java-human-readable-byte-size)
+- [Convert boolean to int in Java](https://www.baeldung.com/java-boolean-to-int)
diff --git a/persistence-modules/hibernate-exceptions/README.md b/persistence-modules/hibernate-exceptions/README.md
index 2e5a98c2f8..c485de2f34 100644
--- a/persistence-modules/hibernate-exceptions/README.md
+++ b/persistence-modules/hibernate-exceptions/README.md
@@ -5,3 +5,4 @@
 - [TransactionRequiredException Error](https://www.baeldung.com/jpa-transaction-required-exception)
 - [Hibernate’s “Object References an Unsaved Transient Instance” Error](https://www.baeldung.com/hibernate-unsaved-transient-instance-error)
 - [EntityNotFoundException in Hibernate](https://www.baeldung.com/hibernate-entitynotfoundexception)
+- [Hibernate’s “Not-Null Property References a Null or Transient Value” Error](https://www.baeldung.com/hibernate-not-null-error)
diff --git a/spring-boot-modules/spring-boot-properties-migrator-demo/README.md b/spring-boot-modules/spring-boot-properties-migrator-demo/README.md
new file mode 100644
index 0000000000..c00eae2681
--- /dev/null
+++ b/spring-boot-modules/spring-boot-properties-migrator-demo/README.md
@@ -0,0 +1,3 @@
+
+### Relevant Articles:
+- [Spring Boot Configuration Properties Migrator](https://www.baeldung.com/spring-boot-properties-migrator)
diff --git a/spring-cloud/spring-cloud-eureka/README.md b/spring-cloud/spring-cloud-eureka/README.md
index 5fc96256f4..0029ea60f6 100644
--- a/spring-cloud/spring-cloud-eureka/README.md
+++ b/spring-cloud/spring-cloud-eureka/README.md
@@ -1,3 +1,4 @@
 ### Relevant Articles:
 - [Introduction to Spring Cloud Netflix – Eureka](http://www.baeldung.com/spring-cloud-netflix-eureka)
 - [Integration Tests With Spring Cloud Netflix and Feign](https://www.baeldung.com/spring-cloud-feign-integration-tests)
+- [Spring Cloud – Disable Discovery Clients with Profiles](https://www.baeldung.com/spring-cloud-disable-discovery-clients)