diff --git a/index.html b/index.html
index e3726ab..1d79b1d 100644
--- a/index.html
+++ b/index.html
@@ -1803,7 +1803,7 @@
             </svg>
             Code Repo
           </a>
-          <a class="button secondary" href="#citation" aria-label="Paper placeholder">
+          <a class="button secondary" href="https://arxiv.org/abs/2605.23904" target="_blank" rel="noopener" aria-label="arXiv paper">
             <img class="button-icon arxiv-icon" src="skillopt-assets/arxiv-logomark-small.svg" alt="" aria-hidden="true">
             Paper
           </a>
@@ -2409,19 +2409,21 @@
         <div>
           <h2>Citation.</h2>
           <p class="section-lede">
-            Placeholder BibTeX. The final paper link and camera-ready citation will be updated when available.
+            If you find SkillOpt useful, please cite the arXiv preprint below.
           </p>
         </div>
       </div>
 
       <div class="bibtex-box">
         <button class="copy-btn" type="button" onclick="copyBibtex(this)">Copy</button>
-        <pre><code>@misc{skillopt2026,
-  title  = {SkillOpt: Executive Strategy for Self-Evolving Agent Skills},
-  author = {SkillOpt Authors},
-  year   = {2026},
-  note   = {Preprint forthcoming},
-  url    = {https://microsoft.github.io/SkillOpt/}
+        <pre><code>@article{skillopt2026,
+  title         = {SkillOpt: Executive Strategy for Self-Evolving Agent Skills},
+  author        = {SkillOpt Authors},
+  year          = {2026},
+  eprint        = {2605.23904},
+  archivePrefix = {arXiv},
+  primaryClass  = {cs.LG},
+  url           = {https://arxiv.org/abs/2605.23904}
 }</code></pre>
       </div>
     </section>
diff --git a/skillopt.html b/skillopt.html
index e3726ab..1d79b1d 100644
--- a/skillopt.html
+++ b/skillopt.html
@@ -1803,7 +1803,7 @@
             </svg>
             Code Repo
           </a>
-          <a class="button secondary" href="#citation" aria-label="Paper placeholder">
+          <a class="button secondary" href="https://arxiv.org/abs/2605.23904" target="_blank" rel="noopener" aria-label="arXiv paper">
             <img class="button-icon arxiv-icon" src="skillopt-assets/arxiv-logomark-small.svg" alt="" aria-hidden="true">
             Paper
           </a>
@@ -2409,19 +2409,21 @@
         <div>
           <h2>Citation.</h2>
           <p class="section-lede">
-            Placeholder BibTeX. The final paper link and camera-ready citation will be updated when available.
+            If you find SkillOpt useful, please cite the arXiv preprint below.
           </p>
         </div>
       </div>
 
       <div class="bibtex-box">
         <button class="copy-btn" type="button" onclick="copyBibtex(this)">Copy</button>
-        <pre><code>@misc{skillopt2026,
-  title  = {SkillOpt: Executive Strategy for Self-Evolving Agent Skills},
-  author = {SkillOpt Authors},
-  year   = {2026},
-  note   = {Preprint forthcoming},
-  url    = {https://microsoft.github.io/SkillOpt/}
+        <pre><code>@article{skillopt2026,
+  title         = {SkillOpt: Executive Strategy for Self-Evolving Agent Skills},
+  author        = {SkillOpt Authors},
+  year          = {2026},
+  eprint        = {2605.23904},
+  archivePrefix = {arXiv},
+  primaryClass  = {cs.LG},
+  url           = {https://arxiv.org/abs/2605.23904}
 }</code></pre>
       </div>
     </section>