diff --git a/environment.yml b/environment.yml
index 337d235e51c5340e758e62359db47a434e0b9508..abe03822a486a986ea1b509728f75151b643f1a9 100644
--- a/environment.yml
+++ b/environment.yml
@@ -18,10 +18,10 @@ dependencies:
   - s3fs
   #- intake-xarray
   - cfgrib
-  - pydap
-  - cftime
+  #- pydap
+  #- cftime
   - h5netcdf
-  - netcdf4==1.5.1  # see https://github.com/pydata/xarray/issues/4925
+  - netcdf4#==1.5.1  # see https://github.com/pydata/xarray/issues/4925
   - pip
   - pip:
     - climetlab