diff --git a/BDA 5.9.3.ipynb b/BDA 5.9.3.ipynb
index abfbe93..f77853a 100644
--- a/BDA 5.9.3.ipynb	
+++ b/BDA 5.9.3.ipynb	
@@ -492,7 +492,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.5"
+   "version": "3.6.4"
   }
  },
  "nbformat": 4,