diff --git a/deploy/unsupported.txt b/deploy/unsupported.txt
index d75dfb9ca..c3bbce57c 100644
--- a/deploy/unsupported.txt
+++ b/deploy/unsupported.txt
@@ -2,7 +2,6 @@
 
 # no spack available
 anvil, gnu, impi
-chicoma-cpu, nvidia, mpich
 chicoma-cpu, aocc, mpich
 chicoma-cpu, amdclang, mpich
 chrysalis, intel, impi
diff --git a/e3sm_submodules/Omega b/e3sm_submodules/Omega
index e9b9f4def..063b28535 160000
--- a/e3sm_submodules/Omega
+++ b/e3sm_submodules/Omega
@@ -1 +1 @@
-Subproject commit e9b9f4def69870b60d841fc65a298e73753f86fa
+Subproject commit 063b28535bcae21efbafbd46782f5298e05c38c4
diff --git a/polaris/machines/chicoma-cpu.cfg b/polaris/machines/chicoma-cpu.cfg
index 8fe0455d8..4ec20d74f 100644
--- a/polaris/machines/chicoma-cpu.cfg
+++ b/polaris/machines/chicoma-cpu.cfg
@@ -21,6 +21,9 @@ software_compiler = gnu
 # the system MPI library to use for gnu compiler
 mpi_gnu = mpich
 
+# the system MPI library to use for nvidia compiler
+mpi_nvidia = mpich
+
 # the base path for spack environments used by polaris
 spack = /usr/projects/e3sm/polaris/chicoma-cpu/spack