diff --git a/components/mpas-ocean/cime_config/buildnml b/components/mpas-ocean/cime_config/buildnml
index 8fa4e67fa8b9..5a71a44fb8b4 100755
--- a/components/mpas-ocean/cime_config/buildnml
+++ b/components/mpas-ocean/cime_config/buildnml
@@ -304,7 +304,7 @@ def buildnml(case, caseroot, compname):
         ic_date = '20240227'
         ic_prefix = 'mpaso.NARRM14to30E3r1'
         if ocn_ic_mode == 'spunup':
-            ic_date = '20240312'
+            ic_date = '20240328'
             ic_prefix = 'mpaso.NARRM14to30E3r1.rstFromG-chrysalis'
 
     elif ocn_grid == 'NARRM14to30E3r2':
diff --git a/components/mpas-seaice/cime_config/buildnml b/components/mpas-seaice/cime_config/buildnml
index b774d215972e..b70cffeecb32 100755
--- a/components/mpas-seaice/cime_config/buildnml
+++ b/components/mpas-seaice/cime_config/buildnml
@@ -273,7 +273,7 @@ def buildnml(case, caseroot, compname):
         grid_date = '20240227'
         grid_prefix = 'mpassi.NARRM14to30E3r1'
         if ice_ic_mode == 'spunup':
-            grid_date = '20240312'
+            grid_date = '20240328'
             grid_prefix = 'mpassi.NARRM14to30E3r1.rstFromG-chrysalis'
 
     elif ice_grid == 'NARRM14to30E3r2':