diff --git a/src/data/roadmaps/java/content/data-types@5g9mmi01WeZ4aDqNzwx_V.md b/src/data/roadmaps/java/content/data-types@5g9mmi01WeZ4aDqNzwx_V.md
index 216a2d582..01ca2b9de 100644
--- a/src/data/roadmaps/java/content/data-types@5g9mmi01WeZ4aDqNzwx_V.md
+++ b/src/data/roadmaps/java/content/data-types@5g9mmi01WeZ4aDqNzwx_V.md
@@ -10,4 +10,5 @@ Data Types are divided into two group -
 Visit the following resources to learn more:
 
 - [@article@Java Data Types](https://jenkov.com/tutorials/java/variables.html)
-- [@article@What are Data Types & Variables?](https://jenkov.com/tutorials/java/data-types.html)
\ No newline at end of file
+- [@article@What are Data Types & Variables?](https://jenkov.com/tutorials/java/data-types.html)
+- [@article@Object Interning by Hyperskill (JetBrains Academy)](https://hyperskill.org/learn/step/5040)