diff --git a/module3/exo3/exercice.ipynb b/module3/exo3/exercice.ipynb
index 64769f1043dd368f399f29be642e45cab600bc27..6cdd8893b5c11c94a26bf8cb815fab108e747f5b 100644
--- a/module3/exo3/exercice.ipynb
+++ b/module3/exo3/exercice.ipynb
@@ -7,6 +7,17 @@
     "# Sujet 2 : le pouvoir d'achat des ouvriers anglais du XVIe au XIXe siècle"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import pandas as pd\n",
+    "import numpy as np\n",
+    "import matplotlib.pyplot as plt"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,