diff --git a/README.md b/README.md
index c47e79d081dcab36320760a00f53c400697a966b..5774de4a6bada1c3f4992d4c3cdfd4dc89574315 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@ Non functional (expected values are $`5.085`$ and $`-0.1156`$)
 | Python   |            3.6.5 | statsmodels 0.9.0 numpy 1.15.4 pandas 0.23.4 matplotlib 3.0.2 | Vim     | Darwin Kernel Version 16.7.0   | Identical                                | Identical                                 | Identical                    | Identical | Similar           |[pdf](https://app-learninglab.inria.fr/gitlab/c914387a7e6f10f1216e1bc16a239ade/mooc-rr/blob/master/module4/exo1.pdf), [Rmd](https://app-learninglab.inria.fr/gitlab/c914387a7e6f10f1216e1bc16a239ade/mooc-rr/blob/master/module4/exo1.Rmd), [py](https://app-learninglab.inria.fr/gitlab/c914387a7e6f10f1216e1bc16a239ade/mooc-rr/blob/master/module4/test.py) | Anne C. |
 | Python   |            3.6.7 | statsmodels 0.8.0 numpy 1.15.4 pandas 0.23.3 matplotlib 2.2.2 | Emacs   | Debian GNU/Linux buster/sid    | Identical                                | Different                                 | Different                    | Different | Similar           | [org](https://app-learninglab.inria.fr/gitlab/e108dddfe1a07ebd6ae763f9c4cdd901/mooc-rr/blob/master/module4/challenger.org), [tar.gz](https://app-learninglab.inria.fr/gitlab/e108dddfe1a07ebd6ae763f9c4cdd901/mooc-rr/blob/master/module4/archive.tar.gz)                                                                                                                                                                                                                                            | R. Letot |
 | Python   |            3.7.1 | statsmodels 0.9.0 numpy 1.15.4 pandas 0.23.3 matplotlib 2.2.3 | Emacs   | Debian GNU/Linux buster/sid    | Identical                                | Identical                                 | Identical                    | Different | Similar           | [org](https://app-learninglab.inria.fr/gitlab/e108dddfe1a07ebd6ae763f9c4cdd901/mooc-rr/blob/master/module4/challenger2.org), [tar.gz](https://app-learninglab.inria.fr/gitlab/e108dddfe1a07ebd6ae763f9c4cdd901/mooc-rr/blob/master/module4/archive2.tar.gz)                                                                                                                                                                                                                                            | R. Letot |
-| Python   |            3.6.4 | statsmodels 0.8.0 numpy 1.14.2 pandas 0.22.0 matplotlib 3.0.1 | Jupyter   | Windows 10    | Identical                                | Identical                                 | Different                   | Different | Different           | [org](https://app-learninglab.inria.fr/gitlab/44e0ff8c8d8f82a505f2746a06b4039c/mooc-rr/tree/master/module4/Exercise_module4.ipynb)                                                                                                                                                                                                                                            | R. Letot |
+| Python   |            3.6.4 | statsmodels 0.8.0 numpy 1.14.2 pandas 0.22.0 matplotlib 3.0.1 | Jupyter   | Windows 10    | Identical                                | Identical                                 | Different                   | Different | Different           | [org](https://app-learninglab.inria.fr/gitlab/44e0ff8c8d8f82a505f2746a06b4039c/mooc-rr/tree/master/module4/Exercise_module4.ipynb)                                                                                                                                                                                                                                            | L. Pacini |
 | **SAS**    |                  |                                                               |         |                                |                                          |                                           |                              |           |                   |                                                                                                                                                                                                                                                                                                                                                            |             |
 | SAS      |              9.4 |                                                               | Jupyter | Windows 7                      | Identical                                | Identical                                 | Identical                    | Identical | Identical         | [ipynb](src/SAS/challenger_SAS_ipynb.ipynb), [pdf](src/SAS/challenger_SAS_ipynb.pdf)                                                                                                                                                                                                                                                                         | M.G. Dondon |