diff --git a/modulefiles/hercules.intel-run.lua b/modulefiles/hercules.intel-run.lua
index 6772bfb..434f088 100644
--- a/modulefiles/hercules.intel-run.lua
+++ b/modulefiles/hercules.intel-run.lua
@@ -1,7 +1,7 @@
 help([[
 ]])
 
-prepend_path("MODULEPATH", "/work/noaa/epic/role-epic/spack-stack/hercules/spack-stack-1.5.1/envs/gsi-addon/install/modulefiles/Core")
+prepend_path("MODULEPATH", "/work/noaa/epic/role-epic/spack-stack/hercules/spack-stack-1.6.0/envs/gsi-addon-env/install/modulefiles/Core")
 
 local stack_intel_ver=os.getenv("stack_intel_ver") or "2021.9.0"
 local stack_impi_ver=os.getenv("stack_impi_ver") or "2021.9.0"
diff --git a/modulefiles/hercules.intel.lua b/modulefiles/hercules.intel.lua
index dc75c00..e2ffedb 100644
--- a/modulefiles/hercules.intel.lua
+++ b/modulefiles/hercules.intel.lua
@@ -1,7 +1,7 @@
 help([[
 ]])
 
-prepend_path("MODULEPATH", "/work/noaa/epic/role-epic/spack-stack/hercules/spack-stack-1.5.1/envs/gsi-addon/install/modulefiles/Core")
+prepend_path("MODULEPATH", "/work/noaa/epic/role-epic/spack-stack/hercules/spack-stack-1.6.0/envs/gsi-addon-env/install/modulefiles/Core")
 
 local stack_intel_ver=os.getenv("stack_intel_ver") or "2021.9.0"
 local stack_impi_ver=os.getenv("stack_impi_ver") or "2021.9.0"