diff --git a/src/data/roadmaps/prompt-engineering/content/107-prompt-hacking/103-defensive-measures.md b/src/data/roadmaps/prompt-engineering/content/107-prompt-hacking/103-defensive-measures.md
index f6180d070..6b4bab191 100644
--- a/src/data/roadmaps/prompt-engineering/content/107-prompt-hacking/103-defensive-measures.md
+++ b/src/data/roadmaps/prompt-engineering/content/107-prompt-hacking/103-defensive-measures.md
@@ -1,2 +1,3 @@
 # Defensive Measures
 
+- [Defensive Measures](https://learnprompting.org/docs/category/-defensive-measures)
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