diff --git a/core-groovy/README.md b/core-groovy/README.md
index c7d54a4fd8..321c37be8d 100644
--- a/core-groovy/README.md
+++ b/core-groovy/README.md
@@ -8,8 +8,8 @@
 - [Types of Strings in Groovy](https://www.baeldung.com/groovy-strings)
 - [A Quick Guide to Iterating a Map in Groovy](https://www.baeldung.com/groovy-map-iterating)
 - [An Introduction to Traits in Groovy](https://www.baeldung.com/groovy-traits)
+- [Closures in Groovy](https://www.baeldung.com/groovy-closures)
+- [Finding Elements in Collections in Groovy](https://www.baeldung.com/groovy-collections-find-elements)
 - [Lists in Groovy](https://www.baeldung.com/groovy-lists)
 - [Converting a String to a Date in Groovy](https://www.baeldung.com/groovy-string-to-date)
-- [Guide to I/O in Groovy](https://www.baeldung.com/groovy-io)
-- [Finding Elements in Collections in Groovy](https://www.baeldung.com/groovy-collections-find-elements)
-- [Closures in Groovy](https://www.baeldung.com/groovy-closures)
+- [Guide to I/O in Groovy](https://www.baeldung.com/groovy-io)
\ No newline at end of file
diff --git a/core-kotlin-2/README.md b/core-kotlin-2/README.md
index 2c6b205600..6d0b20135d 100644
--- a/core-kotlin-2/README.md
+++ b/core-kotlin-2/README.md
@@ -2,8 +2,8 @@
 
 - [Void Type in Kotlin](https://www.baeldung.com/kotlin-void-type)
 - [How to use Kotlin Range Expressions](https://www.baeldung.com/kotlin-ranges)
-- [Split a List into Parts in Kotlin](https://www.baeldung.com/kotlin-split-list-into-parts)
-- [String Comparison in Kotlin](https://www.baeldung.com/kotlin-string-comparison)
-- [Kotlin Annotations](https://www.baeldung.com/kotlin-annotations)
-- [Kotlin Scope Functions](https://www.baeldung.com/kotlin-scope-functions)
 - [Creating a Kotlin Range Iterator on a Custom Object](https://www.baeldung.com/kotlin-custom-range-iterator)
+- [Kotlin Scope Functions](https://www.baeldung.com/kotlin-scope-functions)
+- [Kotlin Annotations](https://www.baeldung.com/kotlin-annotations)
+- [Split a List into Parts in Kotlin](https://www.baeldung.com/kotlin-split-list-into-parts)
+- [String Comparison in Kotlin](https://www.baeldung.com/kotlin-string-comparison)
\ No newline at end of file
diff --git a/kotlin-libraries/README.md b/kotlin-libraries/README.md
index 466b8e92d3..94359193b6 100644
--- a/kotlin-libraries/README.md
+++ b/kotlin-libraries/README.md
@@ -11,4 +11,4 @@
 - [Kotlin with Ktor](https://www.baeldung.com/kotlin-ktor)
 - [REST API With Kotlin and Kovert](https://www.baeldung.com/kotlin-kovert)
 - [MockK: A Mocking Library for Kotlin](https://www.baeldung.com/kotlin-mockk)
-- [Kotlin Immutable Collections](https://www.baeldung.com/kotlin-immutable-collections)
+- [Kotlin Immutable Collections](https://www.baeldung.com/kotlin-immutable-collections)
\ No newline at end of file
diff --git a/persistence-modules/README.md b/persistence-modules/README.md
index 87dc9522fd..2fbaf25f2f 100644
--- a/persistence-modules/README.md
+++ b/persistence-modules/README.md
@@ -11,3 +11,5 @@
 - [Pessimistic Locking in JPA](http://www.baeldung.com/jpa-pessimistic-locking)
 - [Get All Data from a Table with Hibernate](https://www.baeldung.com/hibernate-select-all)
 - [Spring Data with Reactive Cassandra](https://www.baeldung.com/spring-data-cassandra-reactive)
+- [Spring Data JPA – Derived Delete Methods](https://www.baeldung.com/spring-data-jpa-deleteby)
+- [Difference Between save() and saveAndFlush() in Spring Data JPA](https://www.baeldung.com/spring-data-jpa-save-saveandflush)
diff --git a/spring-boot-rest/README.md b/spring-boot-rest/README.md
index f257332df6..e3e93a21db 100644
--- a/spring-boot-rest/README.md
+++ b/spring-boot-rest/README.md
@@ -10,5 +10,5 @@ Module for the articles that are part of the Spring REST E-book:
 8. [Http Message Converters with the Spring Framework](http://www.baeldung.com/spring-httpmessageconverter-rest)
 9. [ETags for REST with Spring](http://www.baeldung.com/etags-for-rest-with-spring)
 10. [Testing REST with multiple MIME types](http://www.baeldung.com/testing-rest-api-with-multiple-media-types)
-11. [Testing Web APIs with Postman Collections](https://www.baeldung.com/postman-testing-collections)
-12. [Spring Boot Consuming and Producing JSON](https://www.baeldung.com/spring-boot-json)
+11. [Spring Boot Consuming and Producing JSON](https://www.baeldung.com/spring-boot-json)
+12. [Testing Web APIs with Postman Collections](https://www.baeldung.com/postman-testing-collections)