diff --git a/18_GP_inference.ipynb b/18_GP_inference.ipynb
index 1bccd74..2b7636f 100644
--- a/18_GP_inference.ipynb
+++ b/18_GP_inference.ipynb
@@ -406,7 +406,7 @@
       "cell_type": "markdown",
       "metadata": {},
       "source": [
-        "`````{admonition} Task 27\n",
+        "`````{admonition} Task 28\n",
         ":class: tip\n",
         "\n",
         "Modify `predict_gaussian_process` to compute posterior distributions in both noise-free and noisy cases.\n",
diff --git a/20_areal_data.ipynb b/20_areal_data.ipynb
index 3fdabe3..4520ee2 100644
--- a/20_areal_data.ipynb
+++ b/20_areal_data.ipynb
@@ -674,7 +674,7 @@
       "cell_type": "markdown",
       "metadata": {},
       "source": [
-        "`````{admonition} Task 28\n",
+        "`````{admonition} Task 29\n",
         ":class: tip\n",
         "\n",
         "- Simulate data from the CAR model using South African boundaries and neighbourhood structure.\n",