diff --git a/.gitmodules b/.gitmodules
index 7194b95d9..efddc5d45 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -66,14 +66,14 @@
         url = https://github.com/ESCOMP/CTSM
         fxDONOTUSEurl = https://github.com/ESCOMP/CTSM
         fxrequired = ToplevelRequired
-        fxtag = ctsm5.4.024
+        fxtag = ctsm5.4.027
 
 [submodule "cice"]
         path = components/cice
         url = https://github.com/ESCOMP/CESM_CICE
         fxDONOTUSEurl = https://github.com/ESCOMP/CESM_CICE
         fxrequired = ToplevelRequired
-        fxtag = cesm3_cice6_6_3_5
+        fxtag = cesm3_cice6_6_3_6
 
 [submodule "mom"]
         path = components/mom
diff --git a/ChangeLog b/ChangeLog
index 70635c986..2a8cc1d6b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,68 @@
+==============================================================
+Tag name: cesm3_0_alpha08n
+Originator(s): CSEG
+Date: 25th Mar 2026
+One-line Summary: CTSM and CICE updates
+
+ccs_config                             https://github.com/ESMCI/ccs_config_cesm/tree/ccs_config_cesm1.0.79  --
+cime                                   https://github.com/ESMCI/cime/tree/cime6.1.169                       --
+components/fms                         https://github.com/ESCOMP/FMS_interface/tree/fi_250428               --
+share                                  https://github.com/ESCOMP/CESM_share/tree/share1.1.19                --
+components/cam                         https://github.com/ESCOMP/CAM/cam6_4_157                             --
+components/clm                         https://github.com/ESCOMP/ctsm/tree/ctsm5.4.027                      **
+components/cice                        https://github.com/ESCOMP/CESM_CICE/tree/cesm3_cice6_6_3_6           **
+components/mom                         https://github.com/ESCOMP/MOM_interface/mi_260121                    --
+components/cism                        https://github.com/ESCOMP/cism-wrapper/tree/cismwrap_2_2_013         --
+components/cdeps                       https://github.com/ESCOMP/CDEPS/tree/cdeps1.0.93                     --
+components/cmeps                       https://github.com/ESCOMP/CMEPS/tree/cmeps1.1.41                     --
+components/rtm                         https://github.com/ESCOMP/rtm/tree/rtm1_0_89                         --
+components/ww3                         https://github.com/ESCOMP/WW3-CESM/tree/main_0.0.19                  --
+components/mizuroute                   https://github.com/ESCOMP/mizuRoute/tree/cesm-coupling.v3.0.1        --
+components/mosart                      https://github.com/ESCOMP/mosart/tree/mosart1_1_13                   --
+libraries/parallelio                   https://github.com/NCAR/ParallilIO/tree/pio2_6_8                     --
+libraries/mpi-serial                   https://github.com/ESMCI/mpi-serial/tree/MPIserial_2.5.0             --
+tools/statistical_ensemble_test/pyCECT https://github.com/NCAR/PyCECT/tree/3.2.1                            --
+tools/CUPiD                            https://github.com/NCAR/CUPiD/tree/v0.5.1                            --
+
+cice
+    David Bailey 2026-03-24 - cesm3_cice6_6_3_6 - components/cice (cesm3_0_alpha08n)
+    https://github.com/ESCOMP/CESM_CICE/tags/cesm3_cice6_6_3_6
+
+    - This changes the initialization of tracers by default for hybrid runs.
+    - Branch / startup runs will be bfb.
+
+
+clm
+    Erik Kluzek 2026-03-24 - ctsm5.4.027 - components/clm (cesm3_0_alpha08n)
+    https://github.com/ESCOMP/ctsm/tags/ctsm5.4.027
+
+    Namelist default changes mainly for clm6_0:
+    - Correct parameter file for coupled
+    - n_melt_glcmec is now 1. (rather than 10.)
+
+    Some corrections to finidat file picking
+
+
+    Erik Kluzek 2026-03-16 - ctsm5.4.026 - components/clm (cesm3_0_alpha08n)
+    https://github.com/ESCOMP/ctsm/tags/ctsm5.4.026
+
+    A FATES update allowing for a new dimension in history output
+    Only changes answers for FATES tests
+
+
+    Erik Kluzek 2026-03-12 - ctsm5.4.025 - components/clm (cesm3_0_alpha08n)
+    https://github.com/ESCOMP/ctsm/tags/ctsm5.4.025
+
+    Merge b4b-dev to master
+
+    Includes:
+    - mizuRoute
+    - Documentation updates
+    - contrib scripts
+    - move of namelist items to parameter file
+    - parameter file updates
+    - New tests for FATES tree recruitment
+
 ==============================================================
 Tag name: cesm3_0_alpha08m
 Originator(s): CSEG
diff --git a/components/cice b/components/cice
index 9be65287b..8a5be1e38 160000
--- a/components/cice
+++ b/components/cice
@@ -1 +1 @@
-Subproject commit 9be65287b077e955e0e7d8e2ec9f1d6eb069b938
+Subproject commit 8a5be1e383ac1845c6668cc4f3dab3582e1148fa
diff --git a/components/clm b/components/clm
index bced2fe74..9ec4ef382 160000
--- a/components/clm
+++ b/components/clm
@@ -1 +1 @@
-Subproject commit bced2fe74c86ed42978adb661bfb8e3b3e819ea5
+Subproject commit 9ec4ef38275acb8813e783f2c7e0b30db884c963