diff --git a/notebook/agentchat_agentoptimizer.ipynb b/notebook/agentchat_agentoptimizer.ipynb
index 7790d0ff5..8e33f79f0 100644
--- a/notebook/agentchat_agentoptimizer.ipynb
+++ b/notebook/agentchat_agentoptimizer.ipynb
@@ -21,7 +21,7 @@
     "More information could be found in the [paper](https://arxiv.org/abs/2402.11359).\n",
     "\n",
     "Authors:\n",
-    "- [Shaokun Zhang](https://github.com/skzhang1), Ph.D. student at the The Pennsylvania State University\n",
+    "- [Shaokun Zhang](https://github.com/skzhang1), Ph.D. student at the Pennsylvania State University\n",
     "- [Jieyu Zhang](https://jieyuz2.github.io), Ph.D. student at the University of Washington"
    ]
   },