diff --git a/PROJECTS/beginner/deserialization-gadget-lab/README.md b/PROJECTS/beginner/deserialization-gadget-lab/README.md
index c95a3eb0..faf7b42d 100644
--- a/PROJECTS/beginner/deserialization-gadget-lab/README.md
+++ b/PROJECTS/beginner/deserialization-gadget-lab/README.md
@@ -1,7 +1,7 @@
 <!-- ©AngelaMos | 2026 -->
 <!-- README.md -->
 
-```json
+```ruby
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