diff --git a/README.md b/README.md
index e0325be..04479dd 100644
--- a/README.md
+++ b/README.md
@@ -62,9 +62,13 @@ If you are interested in running this material locally on your computer, you wil
    conda env create -f environment.yml
    conda activate asean2024-pyrad-course
    ```
+1. Since pydda installs [arm_pyart](https://github.com/ARM-DOE/pyart) we will have to remove it (the workflow work with our [MeteoSwiss fork](https://github.com/MeteoSwiss/pyart))
+   ```
+   conda uninstall arm_pyart
+   ```
 1. Finally define some environment variables that are required for some workflows
    ```
    CWD="$(cd "$(dirname "$1")"; pwd -P)/$(basename "$1")"
    export PYART_CONFIG=$CWD/pyrad_config/mf_config.py
    export METRANETLIB_PATH=$CWD/lib/
-   ```
\ No newline at end of file
+   ```
diff --git a/binder/environment.yml b/binder/environment.yml
index ff94047..e5fb9e9 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -3,7 +3,7 @@ channels:
   - conda-forge
 dependencies:
   - python=3.9
-  - numpy<1.25
+  - numpy
   - bottleneck
   - scipy
   - matplotlib
@@ -11,7 +11,7 @@ dependencies:
   - pandas
   - xarray
   - pydda
-  - pyart_mch
+  - pyart_mch==1.8.6
   - xradar
   - pygrib
   - wradlib
@@ -22,7 +22,7 @@ dependencies:
   - rioxarray
   - geopandas
   - datashader
-  - pyrad_mch=1.8.7
+  - pyrad_mch=1.8.8
   - gdal=3.5.2
   - cookiecutter
   # this is needed for notebooks
@@ -32,7 +32,6 @@ dependencies:
   - nbstripout
   - metpy
   - zip
-  - certifi>=2023.07.22
   - cryptography>=41.0.3
   - semver>=3.0.1
   - nbgitpuller
diff --git a/environment.yml b/environment.yml
index 94cc639..e5fb9e9 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,7 +3,7 @@ channels:
   - conda-forge
 dependencies:
   - python=3.9
-  - numpy<1.25
+  - numpy
   - bottleneck
   - scipy
   - matplotlib
@@ -32,7 +32,6 @@ dependencies:
   - nbstripout
   - metpy
   - zip
-  - certifi>=2023.07.22
   - cryptography>=41.0.3
   - semver>=3.0.1
   - nbgitpuller
@@ -40,4 +39,4 @@ dependencies:
   - pip:
       - tornado>=6.3.3
       - sphinx-pythia-theme
-      - cmweather
\ No newline at end of file
+      - cmweather