diff --git a/docs/tutorials/quickstart.ipynb b/docs/tutorials/quickstart.ipynb
index 244f4f53..2e1155d2 100644
--- a/docs/tutorials/quickstart.ipynb
+++ b/docs/tutorials/quickstart.ipynb
@@ -76,17 +76,17 @@
     "where\n",
     "\n",
     "$$\n",
-    "\\begin{eqnarray}\n",
-    "    k_1(r) &=& \\theta_1^2 \\, \\exp \\left(-\\frac{r^2}{2\\,\\theta_2} \\right) \\\\\n",
-    "    k_2(r) &=& \\theta_3^2 \\, \\exp \\left(-\\frac{r^2}{2\\,\\theta_4}\n",
+    "\\begin{aligned}\n",
+    "    k_1(r) &= \\theta_1^2 \\, \\exp \\left(-\\frac{r^2}{2\\,\\theta_2} \\right) \\\\\n",
+    "    k_2(r) &= \\theta_3^2 \\, \\exp \\left(-\\frac{r^2}{2\\,\\theta_4}\n",
     "                                         -\\theta_5\\,\\sin^2\\left(\n",
     "                                         \\frac{\\pi\\,r}{\\theta_6}\\right)\n",
     "                                        \\right) \\\\\n",
-    "    k_3(r) &=& \\theta_7^2 \\, \\left [ 1 + \\frac{r^2}{2\\,\\theta_8\\,\\theta_9}\n",
+    "    k_3(r) &= \\theta_7^2 \\, \\left [ 1 + \\frac{r^2}{2\\,\\theta_8\\,\\theta_9}\n",
     "                             \\right ]^{-\\theta_8} \\\\\n",
-    "    k_4(r) &=& \\theta_{10}^2 \\, \\exp \\left(-\\frac{r^2}{2\\,\\theta_{11}} \\right)\n",
+    "    k_4(r) &= \\theta_{10}^2 \\, \\exp \\left(-\\frac{r^2}{2\\,\\theta_{11}} \\right)\n",
     "                + \\theta_{12}^2\\,\\delta_{ij}\n",
-    "\\end{eqnarray}\n",
+    "\\end{aligned}\n",
     "$$\n",
     "\n",
     "We can implement this kernel in `tinygp` as follows (we'll use the R&W results as the hyperparameters for now):"