diff --git a/docs/index.html b/docs/index.html
index b6417ae..892611d 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -58,7 +58,7 @@ <h1 class="title is-2 publication-title">Mask4D: Mask Transformer for 4D Panopti
 
               <!-- PDF Link. -->
               <span class="link-block">
-                <a href="https://arxiv.org/abs/2308.16133"
+                <a href="https://arxiv.org/abs/2309.16133"
                    class="external-link button is-normal is-rounded is-dark">
                   <span class="icon">
                       <i class="fas fa-file-pdf"></i>