diff --git a/_config.yml b/_config.yml
index 9cf184a..a7a7186 100644
--- a/_config.yml
+++ b/_config.yml
@@ -31,7 +31,7 @@ sphinx:
       html_favicon: "favicon.ico"
       intersphinx_mapping:
         arviz:
-          - https://arviz-devs.github.io/arviz/
+          - https://python.arviz.org/en/latest/
           - null
         numpy:
           - https://numpy.org/doc/stable
diff --git a/notebooks_updated/chp_06.ipynb b/notebooks_updated/chp_06.ipynb
index 9642809..258288d 100644
--- a/notebooks_updated/chp_06.ipynb
+++ b/notebooks_updated/chp_06.ipynb
@@ -3363,7 +3363,7 @@
     "# Generate the posterior distribution conditioned on the observed\n",
     "# target_log_prob_fn = birth_model.joint_log_prob(observed_time_series=observed)\n",
     "\n",
-    "birth_model_jd = birth_model.joint_distribu2.15.0.post1tion(observed_time_series=observed)"
+    "birth_model_jd = birth_model.joint_distribution(observed_time_series=observed)"
    ]
   },
   {