diff --git a/labs/l4x/NLP-L4X.ipynb b/labs/l4x/NLP-L4X.ipynb
index 913b208e4b333f34f0ec4b6fe481ef63c41fe39b..8eb7b09ab608d6b83ced4cfad002959662960d5a 100644
--- a/labs/l4x/NLP-L4X.ipynb
+++ b/labs/l4x/NLP-L4X.ipynb
@@ -315,7 +315,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "To participate in the [Chocolate Box Challenge](https://www.kaggle.com/t/abb4bfa8d2664ea0b72722fa0ae042f5), run the next code cell to produce a file `submission.csv` and upload this file to Kaggle."
+    "To participate in the [Chocolate Box Challenge](https://www.kaggle.com/t/c46f4697d9af4d57af1b0db9fd5ebd67), run the next code cell to produce a file `submission.csv` and upload this file to Kaggle."
    ]
   },
   {