diff --git a/module3/exo2/exercice.ipynb b/module3/exo2/exercice.ipynb
index ee875cb91abbcd0e56b9282f1b8c51821237b9f1..0e53c3ae8d93c997a5a0314ed911d504a17b91d2 100644
--- a/module3/exo2/exercice.ipynb
+++ b/module3/exo2/exercice.ipynb
@@ -9,7 +9,7 @@
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",