diff --git a/config/cesm/machines/config_machines.xml b/config/cesm/machines/config_machines.xml
index ec594c8a015..e9001800f4a 100644
--- a/config/cesm/machines/config_machines.xml
+++ b/config/cesm/machines/config_machines.xml
@@ -2304,6 +2304,7 @@ This allows using a different mpirun command to launch unit tests
intel/2018a
netCDF-Fortran/4.4.4-intel-2018a-HDF5-1.8.19
PnetCDF/1.8.1-intel-2018a
+ NCO/4.7.2-intel-2018a
CMake/3.9.1