diff --git a/extra_autodiff.ipynb b/extra_autodiff.ipynb
index 7296613..e67a164 100644
--- a/extra_autodiff.ipynb
+++ b/extra_autodiff.ipynb
@@ -898,7 +898,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.6"
+   "version": "3.7.9"
   },
   "nav_menu": {
    "height": "603px",