diff --git a/docs/tutorials/4_train_airl.ipynb b/docs/tutorials/4_train_airl.ipynb
index 258358541..702257c5e 100644
--- a/docs/tutorials/4_train_airl.ipynb
+++ b/docs/tutorials/4_train_airl.ipynb
@@ -14,7 +14,7 @@
    "source": [
     "As usual, we first need an expert. Again, we download one from the HuggingFace model hub for convenience.\n",
     "\n",
-    "Note that we now use a variant of the CartPole environment from the seals package, which has fixed episode durations. Read more about why we do this [here](https://imitation.readthedocs.io/en/latest/getting-started/variable-horizon.html)."
+    "Note that we now use a variant of the CartPole environment from the seals package, which has fixed episode durations. Read more about why we do this [here](https://imitation.readthedocs.io/en/latest/main-concepts/variable_horizon.html)."
    ]
   },
   {