diff --git a/book/chapters/1.1oceanscience.ipynb b/book/chapters/1.1oceanscience.ipynb
index b84576f..2df3129 100644
--- a/book/chapters/1.1oceanscience.ipynb
+++ b/book/chapters/1.1oceanscience.ipynb
@@ -635,7 +635,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.12.3"
+   "version": "3.11.4"
   }
  },
  "nbformat": 4,