diff --git a/binder/environment.yml b/binder/environment.yml
index ab76e97..1bc21ef 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -20,7 +20,7 @@ dependencies:
   - rioxarray
   - geopandas
   - datashader
-  - pyrad_mch
+  - pyrad_mch=1.8.7
   - gdal=3.5.2
   - cookiecutter
   # this is needed for notebooks
diff --git a/environment.yml b/environment.yml
index 8feeb1c..1bc21ef 100644
--- a/environment.yml
+++ b/environment.yml
@@ -20,7 +20,8 @@ dependencies:
   - rioxarray
   - geopandas
   - datashader
-  - pyrad_mch
+  - pyrad_mch=1.8.7
+  - gdal=3.5.2
   - cookiecutter
   # this is needed for notebooks
   - pip
diff --git a/notebooks/pyrad/description-config.ipynb b/notebooks/pyrad/description-config.ipynb
index bbdd633..fae639b 100644
--- a/notebooks/pyrad/description-config.ipynb
+++ b/notebooks/pyrad/description-config.ipynb
@@ -4,6 +4,8 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
+    "# Description of pyrad config files\n",
+    "\n",
     "## 0 : Plot a volume scan (pyrad_config/00_plot_vol)\n",
     "---\n",
     "   \n",