diff --git a/modulefiles/build.hera.gnu.lua b/modulefiles/build.hera.gnu.lua
index 95173c330..7f4d8ac57 100644
--- a/modulefiles/build.hera.gnu.lua
+++ b/modulefiles/build.hera.gnu.lua
@@ -5,9 +5,7 @@ Load environment to compile UFS_UTILS on Hera using Gnu
 hpss_ver=os.getenv("hpss_ver") or ""
 load(pathJoin("hpss", hpss_ver))
 
-prepend_path("MODULEPATH", "/scratch1/NCEPDEV/nems/role.epic/spack-stack/spack-stack-1.6.0/envs/unified-env/install/modulefiles/Core")
--- For openmpi:
-prepend_path("MODULEPATH", "/scratch1/NCEPDEV/jcsda/jedipara/spack-stack/modulefiles")
+prepend_path("MODULEPATH", "/scratch1/NCEPDEV/nems/role.epic/spack-stack/spack-stack-1.6.0/envs/unified-env-rocky8/install/modulefiles/Core")
 
 stack_gcc_ver=os.getenv("stack_gcc_ver") or "9.2"
 load(pathJoin("stack-gcc", gnu_ver))
diff --git a/modulefiles/build.hera.intel.lua b/modulefiles/build.hera.intel.lua
index 01490d7f0..f3280393a 100644
--- a/modulefiles/build.hera.intel.lua
+++ b/modulefiles/build.hera.intel.lua
@@ -5,7 +5,7 @@ Load environment to compile UFS_UTILS on Hera using Intel
 hpss_ver=os.getenv("hpss_ver") or ""
 load(pathJoin("hpss", hpss_ver))
 
-prepend_path("MODULEPATH", "/scratch1/NCEPDEV/nems/role.epic/spack-stack/spack-stack-1.6.0/envs/unified-env/install/modulefiles/Core")
+prepend_path("MODULEPATH", "/scratch1/NCEPDEV/nems/role.epic/spack-stack/spack-stack-1.6.0/envs/unified-env-rocky8/install/modulefiles/Core")
 
 stack_intel_ver=os.getenv("stack_intel_ver") or "2021.5.0"
 load(pathJoin("stack-intel", stack_intel_ver))
diff --git a/reg_tests/ice_blend/driver.hera.sh b/reg_tests/ice_blend/driver.hera.sh
index b86f370d1..ec31d773f 100755
--- a/reg_tests/ice_blend/driver.hera.sh
+++ b/reg_tests/ice_blend/driver.hera.sh
@@ -34,6 +34,10 @@ compiler=${compiler:-"intel"}
 source ../../sorc/machine-setup.sh > /dev/null 2>&1
 module use ../../modulefiles
 module load build.$target.$compiler
+module load grib-util
+# Because of a bug in the grib-util module, the wgrib2 module
+# must be loaded last.
+module load wgrib2/2.0.8
 module list
 
 export DATA="${WORK_DIR:-/scratch2/NCEPDEV/stmp1/$LOGNAME}"
@@ -50,12 +54,6 @@ if [ "$UPDATE_BASELINE" = "TRUE" ]; then
   source ../get_hash.sh
 fi
 
-export WGRIB=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/wgrib
-export WGRIB2=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/wgrib2
-export COPYGB=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/copygb
-export COPYGB2=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/copygb2
-export CNVGRIB=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/cnvgrib
-
 export HOMEreg=/scratch1/NCEPDEV/nems/role.ufsutils/ufs_utils/reg_tests/ice_blend
 export HOMEgfs=$PWD/../..
 
diff --git a/reg_tests/snow2mdl/driver.hera.sh b/reg_tests/snow2mdl/driver.hera.sh
index bc80942d8..f2c07ba5a 100755
--- a/reg_tests/snow2mdl/driver.hera.sh
+++ b/reg_tests/snow2mdl/driver.hera.sh
@@ -25,8 +25,17 @@ compiler=${compiler:-"intel"}
 source ../../sorc/machine-setup.sh > /dev/null 2>&1
 module use ../../modulefiles
 module load build.$target.$compiler
+module load grib-util
+module load wgrib2/2.0.8
 module list
 
+# Because of a bug in the grib-util module, need to construct this
+# variable.
+WGRIB=${grib_util_ROOT}/bin/wgrib
+
+export WGRIB
+export WGRIB2
+
 DATA_ROOT="${WORK_DIR:-/scratch2/NCEPDEV/stmp1/$LOGNAME}"
 DATA_ROOT="${DATA_ROOT}/reg-tests/snow2mdl"
 
@@ -48,8 +57,6 @@ fi
 
 export HOMEreg=/scratch1/NCEPDEV/nems/role.ufsutils/ufs_utils/reg_tests/snow2mdl
 export HOMEgfs=$PWD/../..
-export WGRIB=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/wgrib
-export WGRIB2=/scratch2/NCEPDEV/nwprod/NCEPLIBS/utils/grib_util.v1.1.1/exec/wgrib2
 
 # The first test mimics GFS OPS.