diff --git a/.github/workflows/pylag-package-conda-linux.yml b/.github/workflows/pylag-package-conda-linux.yml
index d6f7209..7f6a9e1 100644
--- a/.github/workflows/pylag-package-conda-linux.yml
+++ b/.github/workflows/pylag-package-conda-linux.yml
@@ -18,7 +18,7 @@ jobs:
         with:
           activate-environment: "pylag_test"
           auto-activate-base: false
-          channels: conda-forge,JimClark
+          channels: conda-forge
           auto-update-conda: true
           environment-file: environment.yml
           python-version: ${{ matrix.python-version }}
@@ -27,10 +27,10 @@ jobs:
         run: |
           conda info
           conda list
-      - name: Install local changes
+      - name: Install package
         shell: bash -l {0}
         run: |
-          python -m pip install .
+          python -m pip install -e .
 #      - name: Lint
 #        shell: bash -l {0}
 #        run: |
diff --git a/environment.yml b/environment.yml
index f99cb3f..4562907 100644
--- a/environment.yml
+++ b/environment.yml
@@ -1,5 +1,18 @@
 name: pylag
 channels:
-  - JimClark
+  - conda-forge
 dependencies:
-  - pylag
+  - python
+  - mpi4py
+  - numpy>=1.20
+  - scipy>=1.4.1
+  - cython>=0.29
+  - progressbar
+  - natsort
+  - netCDF4
+  - cftime>=1.1
+  - configparser
+  - stripy
+  - shapely
+  - pyproj
+  - nose2
diff --git a/pylag/grid_metrics.pyx b/pylag/grid_metrics.pyx
index 0ca8a51..6f50e57 100644
--- a/pylag/grid_metrics.pyx
+++ b/pylag/grid_metrics.pyx
@@ -198,7 +198,7 @@ def create_fvcom_grid_metrics_file(fvcom_file_name: str,
                                    variable_names: Optional[dict]={},
                                    obc_file_name: Optional[str]=None,
                                    obc_file_delimiter: Optional[str]=' ',
-                                   central_latitude: Optional[float]=0.0,
+                                   central_latitude: Optional[int]=0,
                                    grid_metrics_file_name: Optional[str]='./grid_metrics.nc'):
     """Create FVCOM grid metrics file
 
@@ -659,7 +659,7 @@ def create_arakawa_a_grid_metrics_file(file_name, lon_var_name='longitude',
         reference_var_name=None, bathymetry_var_name=None, dim_names=None,
         is_global=False, surface_only=False, save_mask=True, prng_seed=10,
         masked_vertices_per_element=0,
-        central_latitude: Optional[int]=0.0,
+        central_latitude: Optional[int]=0,
         grid_metrics_file_name='./grid_metrics.nc'):
     """ Create a Arakawa A-grid metrics file