diff --git a/core-java-modules/core-java-exceptions-3/README.md b/core-java-modules/core-java-exceptions-3/README.md
index 8a59d6a229..e1372381a8 100644
--- a/core-java-modules/core-java-exceptions-3/README.md
+++ b/core-java-modules/core-java-exceptions-3/README.md
@@ -7,3 +7,4 @@
 - [Java IndexOutOfBoundsException “Source Does Not Fit in Dest”](https://www.baeldung.com/java-indexoutofboundsexception)
 - [Localizing Exception Messages in Java](https://www.baeldung.com/java-localize-exception-messages)
 - [Explanation of ClassCastException in Java](https://www.baeldung.com/java-classcastexception)
+- [NoSuchFieldError in Java](https://www.baeldung.com/java-nosuchfielderror)
diff --git a/core-java-modules/core-java-lang-3/README.md b/core-java-modules/core-java-lang-3/README.md
index 78491e5bfa..757806c8f6 100644
--- a/core-java-modules/core-java-lang-3/README.md
+++ b/core-java-modules/core-java-lang-3/README.md
@@ -9,4 +9,5 @@ This module contains articles about core features in the Java language
 - [The Difference Between a.getClass() and A.class in Java](https://www.baeldung.com/java-getclass-vs-class)
 - [Constants in Java: Patterns and Anti-Patterns](https://www.baeldung.com/java-constants-good-practices)
 - [The transient Keyword in Java](https://www.baeldung.com/java-transient-keyword)
+- [How to Access an Iteration Counter in a For Each Loop](https://www.baeldung.com/java-foreach-counter)
 - [[<-- Prev]](/core-java-modules/core-java-lang-2)
diff --git a/core-java-modules/core-java-security-2/README.md b/core-java-modules/core-java-security-2/README.md
index 03a5a94acc..bb5e204c98 100644
--- a/core-java-modules/core-java-security-2/README.md
+++ b/core-java-modules/core-java-security-2/README.md
@@ -12,4 +12,6 @@ This module contains articles about core Java Security
 - [How to Read PEM File to Get Public and Private Keys](https://www.baeldung.com/java-read-pem-file-keys)
 - [Listing the Available Cipher Algorithms](https://www.baeldung.com/java-list-cipher-algorithms)
 - [Get a List of Trusted Certificates in Java](https://www.baeldung.com/java-list-trusted-certificates)
+- [Security Context Basics: User, Subject and Principal](https://www.baeldung.com/security-context-basics)
+- [Java AES Encryption and Decryption](https://www.baeldung.com/java-aes-encryption-decryption)
 - More articles: [[<-- prev]](/core-java-modules/core-java-security)
diff --git a/spring-mvc-xml/README.md b/spring-mvc-xml/README.md
index 0adf127aaa..3fbea3626b 100644
--- a/spring-mvc-xml/README.md
+++ b/spring-mvc-xml/README.md
@@ -17,6 +17,7 @@ The "REST With Spring" Classes: http://bit.ly/restwithspring
 - [A Java Web Application Without a web.xml](https://www.baeldung.com/java-web-app-without-web-xml)
 - [Validating RequestParams and PathVariables in Spring](https://www.baeldung.com/spring-validate-requestparam-pathvariable)
 - [Debugging the Spring MVC 404 “No mapping found for HTTP request” Error](https://www.baeldung.com/spring-mvc-404-error)
+- [Introduction to Servlets and Servlet Containers](https://www.baeldung.com/java-servlets-containers-intro)
 
 ## Spring MVC with XML Configuration Example Project
 
diff --git a/spring-thymeleaf-3/README.md b/spring-thymeleaf-3/README.md
index 8bb8861daf..048b48d39f 100644
--- a/spring-thymeleaf-3/README.md
+++ b/spring-thymeleaf-3/README.md
@@ -9,3 +9,4 @@ This module contains articles about Spring with Thymeleaf
 - [Working with Select and Option in Thymeleaf](https://www.baeldung.com/thymeleaf-select-option)
 - [Conditional CSS Classes in Thymeleaf](https://www.baeldung.com/spring-mvc-thymeleaf-conditional-css-classes)
 - [Using Hidden Inputs with Spring and Thymeleaf](https://www.baeldung.com/spring-thymeleaf-hidden-inputs)
+- [Thymeleaf Variables](https://www.baeldung.com/thymeleaf-variables)
diff --git a/testing-modules/testing-libraries-2/README.md b/testing-modules/testing-libraries-2/README.md
index 3325600b5e..f8361904b8 100644
--- a/testing-modules/testing-libraries-2/README.md
+++ b/testing-modules/testing-libraries-2/README.md
@@ -1,3 +1,4 @@
 ### Relevant Articles:
 
 - [Guide to the System Rules Library](https://www.baeldung.com/java-system-rules-junit)
+- [Guide to the System Stubs Library](https://www.baeldung.com/java-system-stubs)