diff --git a/ci/spack.yaml b/ci/spack.yaml
index f0db7c2ac..c779b40a6 100644
--- a/ci/spack.yaml
+++ b/ci/spack.yaml
@@ -7,16 +7,15 @@ spack:
   - netcdf-c@4.9.2
   - netcdf-fortran@4.6.1
   - bacio@2.4.1
-  - g2@3.4.5
-  - ip@4.4.0 precision=d
+  - g2@3.5.1
+  - ip@5.0.0
   - nemsio@2.5.4
-  - sp@2.5.0
   - w3emc@2.10.0
   - sfcio@1.4.1
   - sigio@2.3.2
   - nccmp@1.9.0.1
-  - parallelio@2.5.10+fortran~pnetcdf
-  - esmf@8.6.0
+  - parallelio@2.6.2+pnetcdf
+  - esmf@8.6.1
   view: true
   concretizer:
     unify: when_possible
diff --git a/modulefiles/build.hera.intel.lua b/modulefiles/build.hera.intel.lua
index 377b0dda6..ececfd4b9 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-rocky8/install/modulefiles/Core")
+prepend_path("MODULEPATH", '/scratch1/NCEPDEV/global/David.Huber/SPACK/ss_1.8.0/envs/unified-env/install/modulefiles/Core')
 
 stack_intel_ver=os.getenv("stack_intel_ver") or "2021.5.0"
 load(pathJoin("stack-intel", stack_intel_ver))
@@ -13,24 +13,21 @@ load(pathJoin("stack-intel", stack_intel_ver))
 stack_impi_ver=os.getenv("stack_impi_ver") or "2021.5.1"
 load(pathJoin("stack-intel-oneapi-mpi", stack_impi_ver))
 
-cmake_ver=os.getenv("cmake_ver") or "3.23.1"
+cmake_ver=os.getenv("cmake_ver") or "3.27.9"
 load(pathJoin("cmake", cmake_ver))
 
 bacio_ver=os.getenv("bacio_ver") or "2.4.1"
 load(pathJoin("bacio", bacio_ver))
 
-g2_ver=os.getenv("g2_ver") or "3.4.5"
+g2_ver=os.getenv("g2_ver") or "3.5.1"
 load(pathJoin("g2", g2_ver))
 
-ip_ver=os.getenv("ip_ver") or "4.3.0"
+ip_ver=os.getenv("ip_ver") or "5.0.0"
 load(pathJoin("ip", ip_ver))
 
 nemsio_ver=os.getenv("nemsio_ver") or "2.5.4"
 load(pathJoin("nemsio", nemsio_ver))
 
-sp_ver=os.getenv("sp_ver") or "2.5.0"
-load(pathJoin("sp", sp_ver))
-
 w3emc_ver=os.getenv("w3emc_ver") or "2.10.0"
 load(pathJoin("w3emc", w3emc_ver))
 
@@ -41,8 +38,8 @@ load(pathJoin("w3emc", w3emc_ver))
 sigio_ver=os.getenv("sigio_ver") or "2.3.2"
 load(pathJoin("sigio", sigio_ver))
 
-zlib_ver=os.getenv("zlib_ver") or "1.2.13"
-load(pathJoin("zlib", zlib_ver))
+zlib_ver=os.getenv("zlib_ver") or "2.1.6"
+load(pathJoin("zlib-ng", zlib_ver))
 
 png_ver=os.getenv("png_ver") or "1.6.37"
 load(pathJoin("libpng", png_ver))
@@ -56,10 +53,10 @@ load(pathJoin("netcdf-fortran", netcdf_fortran_ver))
 nccmp_ver=os.getenv("nccmp_ver") or "1.9.0.1"
 load(pathJoin("nccmp", nccmp_ver))
 
-esmf_ver=os.getenv("esmf_ver") or "8.6.0"
+esmf_ver=os.getenv("esmf_ver") or "8.6.1"
 load(pathJoin("esmf", esmf_ver))
 
-nco_ver=os.getenv("nco_ver") or "5.0.6"
+nco_ver=os.getenv("nco_ver") or "5.1.6"
 load(pathJoin("nco", nco_ver))
 
 whatis("Description: UFS_UTILS build environment")
diff --git a/reg_tests/ice_blend/driver.hera.sh b/reg_tests/ice_blend/driver.hera.sh
index ec31d773f..863083e41 100755
--- a/reg_tests/ice_blend/driver.hera.sh
+++ b/reg_tests/ice_blend/driver.hera.sh
@@ -37,7 +37,7 @@ 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 load wgrib2/3.1.1
 module list
 
 export DATA="${WORK_DIR:-/scratch2/NCEPDEV/stmp1/$LOGNAME}"
diff --git a/reg_tests/snow2mdl/driver.hera.sh b/reg_tests/snow2mdl/driver.hera.sh
index f2c07ba5a..872f034ae 100755
--- a/reg_tests/snow2mdl/driver.hera.sh
+++ b/reg_tests/snow2mdl/driver.hera.sh
@@ -26,7 +26,7 @@ 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 load wgrib2/3.1.1
 module list
 
 # Because of a bug in the grib-util module, need to construct this