diff --git a/17_GP_priors.ipynb b/17_GP_priors.ipynb
index 7b5502f..7a82e72 100644
--- a/17_GP_priors.ipynb
+++ b/17_GP_priors.ipynb
@@ -983,7 +983,7 @@
       "cell_type": "markdown",
       "metadata": {},
       "source": [
-        "`````{admonition} Task 25\n",
+        "`````{admonition} Task 26\n",
         ":class: tip\n",
         "\n",
         "- Implement Matern-1/2 kernel:\n",
@@ -1036,7 +1036,7 @@
         "\\end{align*}\n",
         "$$\n",
         "\n",
-        "`````{admonition} Task 26\n",
+        "`````{admonition} Task 27\n",
         ":class: tip\n",
         "\n",
         "Show that $f:= \\mu + zL$ is indeed distributed as $\\mathcal{N}(\\mu, K)$.\n",