diff --git a/index.html b/index.html
index bcbf081..1c9dfd6 100644
--- a/index.html
+++ b/index.html
@@ -82,7 +82,7 @@
                 </div>
                 
                 <a href="https://brain.korea.ac.kr/icprai2024/tutorials.php" class="btn">Website</a>
-                <a href="https://zcli-charlie.github.io/llm-tutorial/slides/icprai24-tutorial-slides.pdf" class="btn">Slides</a>  
+                <a href="https://github.com/zcli-charlie/llm-tutorial/blob/main/slides/icprai24-tutorial-slides.pdf" class="btn">Slides</a>  
                 <!-- to be updated -->
                 
             </div>