diff --git a/Python3.md b/Python3.md
index cdc03ec..33ccb41 100644
--- a/Python3.md
+++ b/Python3.md
@@ -43,7 +43,7 @@ We use [tox](https://tox.readthedocs.io/en/latest/) to standardize environments
 | ~~`interfaces`~~ | ~~done~~ |  |  |
 | `introducer` | **doing** |  |  |
 | ~~`monitor`~~ | ~~done~~ |  |  |
-| `mutable`‡ | **todo** |  | a few tests modules done |
+| `mutable`‡ | **doing** | Itamar |  |
 | `node` | doing | Itamar |  |
 | `nodemaker` | **todo** |  |  |
 | `scripts` | **todo** |  |  |