diff --git a/02_hola_mundo_con_flask.ipynb b/02_hola_mundo_con_flask.ipynb
index 8c00dca..7425136 100644
--- a/02_hola_mundo_con_flask.ipynb
+++ b/02_hola_mundo_con_flask.ipynb
@@ -61,6 +61,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "%%python",
     "from flask import Flask\n",
     "\n",
     "app = Flask(__name__)\n",