diff --git a/HISTORY.rst b/HISTORY.rst
index 44b6fa6f..d0f13927 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,12 +1,20 @@
 Version History
 ===============
 
+v0.6.1 (2021-02-23)
+-------------------
+Bug Fixes
+^^^^^^^^^
+* Add cf-xarray as dependency. This is a dependency of roocs-utils>=0.2.1 so is not a breaking change.
+* Remove python-dateutil, fiona and geojson as dependencies, no longer needed.
+
 
 v0.6.0 (2021-02-22)
 -------------------
 Breaking Changes
 ^^^^^^^^^^^^^^^^
 * New dev dependency: GitPython==3.1.12
+* roocs-utils>=0.2.1 required.
 
 New Features
 ^^^^^^^^^^^^
diff --git a/clisops/utils/output_utils.py b/clisops/utils/output_utils.py
index 1ddf2ba1..b11d6871 100644
--- a/clisops/utils/output_utils.py
+++ b/clisops/utils/output_utils.py
@@ -231,7 +231,7 @@ def get_output(ds, output_type, output_dir, namer):
 
         writer = getattr(chunked_ds, format_writer)
         delayed_obj = writer(output_path, compute=False)
-        delayed_obj.compute()  # TypeError: float() argument must be a string or a number, not 'cftime._cftime.Datetime360Day'
+        delayed_obj.compute()
 
     LOGGER.info(f"Wrote output file: {output_path}")
     return output_path
diff --git a/docs/environment.yml b/docs/environment.yml
index 96b560fd..6b32f2b9 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -12,16 +12,14 @@ dependencies:
 - numpy>=1.16
 - xarray>=0.15
 - pandas>=1.0.3
-- cftime>=1.0.4,<=1.3.1
+- cftime>=1.4.1
 - netCDF4>=1.4
 - xesmf>=0.5.2
 - poppler>=0.67
-- fiona>=1.8
-- geojson>=2.5.0
 - shapely>=1.6
 - geopandas>=0.7
 - dask>=2.6.0
 - bottleneck>=1.3.1,<1.4
 - pyproj>=2.5
-- python-dateutil>=2.8.1
 - roocs-utils>=0.2.1
+- cf_xarray>=0.3.1
diff --git a/environment.yml b/environment.yml
index 2adc429e..8e6b2ea1 100644
--- a/environment.yml
+++ b/environment.yml
@@ -7,19 +7,17 @@ dependencies:
  - numpy>=1.16
  - xarray>=0.15
  - pandas>=1.0.3
- - cftime>=1.0.4,<=1.3.1
+ - cftime>=1.4.1
  - netCDF4>=1.4
  - poppler>=0.67
- - fiona>=1.8
- - geojson>=2.5.0
  - shapely>=1.6
  - geopandas>=0.7
  - xesmf>=0.5.2
  - dask>=2.6.0
  - bottleneck>=1.3.1,<1.4
  - pyproj>=2.5
- - python-dateutil>=2.8.1
  - requests>=2.0
  - roocs-utils>=0.2.1
+ - cf_xarray>=0.3.1
 # - pip:
 #     - roocs-utils @ git+https://github.com/roocs/roocs-utils.git@master#egg=roocs-utils
diff --git a/requirements.txt b/requirements.txt
index e399d78f..b15df86c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,16 +1,14 @@
 numpy>=1.16
 xarray>=0.15
 pandas>=1.0.3
-cftime>=1.0.4,<=1.3.1
+cftime>=1.4.1
 netCDF4>=1.4
-fiona>=1.8
-geojson>=2.5.0
 shapely>=1.6
 geopandas>=0.7
 dask[complete]>=2.6
 pyproj>=2.5
 bottleneck~=1.3.1
-python-dateutil>=2.8.1
 requests>=2.0
 roocs-utils>=0.2.1
+cf-xarray>=0.3.1
 # roocs-utils @ git+https://github.com/roocs/roocs-utils.git@master#egg=roocs-utils