diff --git a/doc/install.rst b/doc/install.rst
index 67b803b9e5d..939d2b51c13 100644
--- a/doc/install.rst
+++ b/doc/install.rst
@@ -55,6 +55,7 @@ PyGMT requires the following libraries:
 * `numpy <http://www.numpy.org/>`__
 * `pandas <https://pandas.pydata.org/>`__
 * `xarray <http://xarray.pydata.org/>`__
+* `netCDF4 <https://github.com/Unidata/netcdf4-python>`__
 * `packaging <https://pypi.org/project/packaging/>`__
 
 The following are optional (but recommended) dependencies:
@@ -79,7 +80,7 @@ First, we must configure conda to get packages from the
 Now we can create a new conda environment with Python and all our dependencies installed
 (we'll call it ``pygmt`` but you can change it to whatever you want)::
 
-     conda create --name pygmt python=3.6 pip numpy pandas xarray packaging gmt=6.0.0
+     conda create --name pygmt python=3.6 pip numpy pandas xarray netcdf4 packaging gmt=6.0.0
 
 Activate the environment by running::