diff --git a/notebooks/test_lib.ipynb b/notebooks/test_lib.ipynb
index 653a43b..0b7ae52 100644
--- a/notebooks/test_lib.ipynb
+++ b/notebooks/test_lib.ipynb
@@ -166,7 +166,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.2"
+   "version": "3.5.2"
   },
   "name": "test_lib.ipynb"
  },