diff --git a/README.md b/README.md
index bf4067f..8eec6dd 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,8 @@ This is mirrored on `/sf/cristallina/config/documentation`.
 
 ## Changelog for Cristallina computational issues
 
+- 16.04.2023
+    - updated: analysis_forge environment: minor updates for mamba, pytest, jupyter notebook 
 - 03.04.2023 
     - updated: analysis_forge conda environment: especially newer jupyterlab 3.6.3, the widgets, and small things.
     - updated: analysis conda environment: especially newer the widgets to 4.0.5 (and ipywidgets to 8.0.4) and sf_data to 0.3.2, and small things.