diff --git a/algorithms-miscellaneous-3/README.md b/algorithms-miscellaneous-3/README.md
index 4dd4b66ff2..7a83a97c5b 100644
--- a/algorithms-miscellaneous-3/README.md
+++ b/algorithms-miscellaneous-3/README.md
@@ -4,3 +4,4 @@
 - [Implementing Simple State Machines with Java Enums](https://www.baeldung.com/java-enum-simple-state-machine)
 - [Converting Between Roman and Arabic Numerals in Java](http://www.baeldung.com/java-convert-roman-arabic)
 - [Practical Java Examples of the Big O Notation](http://www.baeldung.com/java-algorithm-complexity)
+- [Checking If a List Is Sorted in Java](https://www.baeldung.com/java-check-if-list-sorted)
diff --git a/core-groovy-2/README.md b/core-groovy-2/README.md
index 1d35669cd7..d6fc6fc2f7 100644
--- a/core-groovy-2/README.md
+++ b/core-groovy-2/README.md
@@ -5,4 +5,5 @@
 - [String Matching in Groovy](http://www.baeldung.com/)
 - [Template Engines in Groovy](https://www.baeldung.com/groovy-template-engines)
 - [Groovy def Keyword](https://www.baeldung.com/groovy-def-keyword)
-- [Pattern Matching in Strings in Groovy](https://www.baeldung.com/groovy-pattern-matching)
\ No newline at end of file
+- [Pattern Matching in Strings in Groovy](https://www.baeldung.com/groovy-pattern-matching)
+- [Working with XML in Groovy](https://www.baeldung.com/groovy-xml)
\ No newline at end of file
diff --git a/libraries-2/README.md b/libraries-2/README.md
index 8243b9f82c..cdeed10b3f 100644
--- a/libraries-2/README.md
+++ b/libraries-2/README.md
@@ -4,4 +4,4 @@
 - [A Guide to jBPM with Java](https://www.baeldung.com/jbpm-java)
 - [Guide to Classgraph Library](https://www.baeldung.com/classgraph)
 - [Create a Java Command Line Program with Picocli](https://www.baeldung.com/java-picocli-create-command-line-program)
-
+- [Guide to Java Parallel Collectors Library](https://www.baeldung.com/java-parallel-collectors)