diff --git a/binder/environment.yml b/binder/environment.yml
index 1bc21ef..a1c54af 100644
--- a/binder/environment.yml
+++ b/binder/environment.yml
@@ -14,6 +14,7 @@ dependencies:
   - pyart_mch
   - xradar
   - wradlib
+  - sphinx=5.0
   - dask
   - tqdm
   - hvplot
diff --git a/environment.yml b/environment.yml
index 1bc21ef..a1c54af 100644
--- a/environment.yml
+++ b/environment.yml
@@ -14,6 +14,7 @@ dependencies:
   - pyart_mch
   - xradar
   - wradlib
+  - sphinx=5.0
   - dask
   - tqdm
   - hvplot