diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index 1543184badbe0cb723e83a9e91d401cedb810e9e..46e693e6dba9001586a4456976ef3f94ead1ef7f 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -70,6 +70,15 @@
     "import numpy as np"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 10,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "np.random.seed(seed=42)"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,