diff --git a/CH01/CH01_SEC04_3_Housing.ipynb b/CH01/CH01_SEC04_3_Housing.ipynb
index 29a2e57..ba827f6 100644
--- a/CH01/CH01_SEC04_3_Housing.ipynb
+++ b/CH01/CH01_SEC04_3_Housing.ipynb
@@ -122,7 +122,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.5"
+   "version": "3.8.5"
   }
  },
  "nbformat": 4,