diff --git a/examples/notebook_BHBH.ipynb b/examples/notebook_BHBH.ipynb
index ca1bf6a07184ad059b0a250fa087273a317c0a89..9dcc1fab8158516ccdbd938c187738a6961d9d6f 100644
--- a/examples/notebook_BHBH.ipynb
+++ b/examples/notebook_BHBH.ipynb
@@ -4947,7 +4947,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -4961,7 +4961,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.5"
+   "version": "3.6.4"
   }
  },
  "nbformat": 4,