diff --git a/README.md b/README.md
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+++ b/README.md
@@ -18,6 +18,7 @@ Latest features:
 
 | date | description |
 |---|---|
+| 2023/07/03 | Maintenance relealse (2023.7.1): Code has been reorganised so it is easier to navigate. No API changes. |
 | 2023/05/20 | Maintenance release (2022.4.3) [graph.phaseline](https://github.com/root-11/graph-theory/blob/da8b60137a73d7b7c23a960cb544181ca1bc122a/graph/__init__.py#L1291) has a new simpler and faster algorithm ( O(N*E) --> O(N+E) ). |
 | 2022/12/12 | Maintenance release (2022.4.2): To speed up the package import plot3d has been moved to function call. |
 | 2022/10/04 | New tutorial: [Learn to solve traffic jams and sudoku's](https://github.com/root-11/graph-theory/blob/master/examples/graphs%20as%20finite%20state%20machines.ipynb) |