diff --git a/book/exercicios.ipynb b/book/exercicios.ipynb
index 6ffbc74..8c018e4 100644
--- a/book/exercicios.ipynb
+++ b/book/exercicios.ipynb
@@ -145,7 +145,9 @@
   {
    "cell_type": "code",
    "execution_count": 1,
-   "metadata": {},
+   "metadata": {    "tags": [
+    "hide-cell"
+   ]},
    "outputs": [
     {
      "name": "stdout",